Make sure to watch the latest Christmas episode I have two giveaways! kzread.info/dash/bejne/no2dxcd-pKWalZc.html

Great video! I'm a huge Hitachi fan and i pretty got all their best pieces and the 330 is part of them. Even if it was one of the smaller model it is truly an amazing little performer. I could live only with that one and be happy and that says a lot. Keep up the good work!

@RetroRepairGuy

3 жыл бұрын

Thank you! I hadn't heard it in years and I was really impressed after I fixed it and was testing. It really packs a punch. Until I started fixing it I had no idea it was an OCL type amp; I'm so happy with its performance.

Well hello folks. Just two days ago I bring a lost puppy home here - HA-3500 it's alive and works. I was excited and almost wet the floor too. As I had to go boldly I just went on my own dancing and singing playing star again. Hook up JBL 630 later Celestion DL4. Now the time to recap this one plus JVC RX801V or Yamaha RX300 or 500. Now I have lots to do within lockdown era. As I'm a nillionaire with a safe full of time. Yes I Joined enjoyable tips too please don't stop. I like your idea a quick video 101 how to do and not to do. I'm the big kid now that lick the frozen metal pole and 9v battery.

@RetroRepairGuy

3 жыл бұрын

I really appreciate the encouragement! It's nice to see people enjoying the videos. Thank you so much!

I've got a Chinnon (Dixon's then own brand name) tuner amp with Wharfedale speakers bought in 1975 & still going strong tho the radio is a bit crackly, but connecting my Technics cd player it has a beautiful warm sound. The Chinnon was made in Japan & the knobs have a excellent weightiness when adjusting. Quality unlike now.

@RetroRepairGuy

Жыл бұрын

Hi. I actually had never heard of Chinnon. Most of these old amps, especially from the 70s and 80s were built to last just like the old cars. Everything from the chassis to the knobs feels heavy and of good quality. Thanks for watching!

Cool

I never thought about adding solder first to a joint before desoldering it to help pull it out, thankyou

@RetroRepairGuy

2 жыл бұрын

Hi! Yeah this is especially true when the machines building the boards put just a tiny bit it makes it hard to suck anything out. Also some boards use a very low lead or lead free solder so by adding it again makes it easier to remove. This was the second video I ever uploaded. You might enjoy the newer ones a little more as I give more details and they have history intros. Here's an 80s drum machine I just fixed. kzread.info/dash/bejne/iaOjk499g93JZaQ.html Thanks so much for watching!

Really cool video Thanks and more pls

@RetroRepairGuy

3 жыл бұрын

More to come!

Good job 👏🏻👏🏻👏🏻

@RetroRepairGuy

3 жыл бұрын

Thank you! 😃

Good job!

@RetroRepairGuy

3 жыл бұрын

Thank you! Cheers!

Good job man !

@RetroRepairGuy

2 жыл бұрын

Hi there! Thank you so much! Please check out episode 9 where I restored the Tape Deck that goes with it: kzread.info/dash/bejne/iaCKsrqNgMqxYrA.html

hi..im from indonesia and im newbie on amplifiers repair.i enjoy you video about Hitach Amp.Waiting another repairi amps...thanks

@RetroRepairGuy

2 жыл бұрын

Hi and thank you! I will eventually repair more amplifiers. I am trying to diversify and fix many different things. Please subscribe and click the notification so you will know as soon as I release a video. Have a great day!

I have the HA-330 and am using it in A+B mode with bi-amped KEF Q3's, and a bluetooth tube preamplifier, it literally blows up people's minds when they hear it, that this mini beast of an amplifer with 20 plus yr old speakers sounds better than anything modern they have heard. Am pairing it with a wired Raspberry Pi running Volumino soon for lossless listening.

@RetroRepairGuy

3 жыл бұрын

Yes, it does because it's an OCL amplifier capable of high output at low frequencies. Today OCL amps are generally found in very high-end components that cost thousands. I had not heard it since I was very young, so it surprised me as well, knowing it was such an amp. If you haven't done so already, you should really consider replacing the 45-year-old capacitors to prevent any damage to the transistors as they are almost impossible to find. The cost wasn't too high, but it was a lot of work. Only looks easy in a 20-minute video.

@kartiq

3 жыл бұрын

@@RetroRepairGuy Thank you, I shall start looking for the caps, am in India so really don't know what I will get here but if you are okay with it will message you with what options I get here!

@RetroRepairGuy

3 жыл бұрын

You can get everything here: www.digikey.in If you need more information let me know.

i am doing classic hifi restoration in Johannesburg, South Africa. I really like your channel, thank you. I will be sure to keep watching your channel.

@RetroRepairGuy

2 жыл бұрын

Hi there! Thank you very much! This is a pretty old video. You should check out some of the later ones. This one came out yesterday kzread.info/dash/bejne/dWWg2LiEZqTWaZs.html. Thanks for watching!

Very good,kindly help to rectify that my amplifier shows overload led light glowing not releasing

A great restoration! Congratulations , I had a Polivox 5000 that attracted a lot of attention from visitors ...

@RetroRepairGuy

Жыл бұрын

Hi and thank you! I had to Google the Polivox I didn't know about it, looks nice! Thanks for watching!

Hi everyone. The next video should roll out by tomorrow evening. An absurd delay that I will explain in the video but my channel had false copyright claims against it. All seems clear now and back on regular schedule.

I can already tell you are gonna grow as a channel quickly

@RetroRepairGuy

3 жыл бұрын

Hi. Wow thank you! Means a lot to me!

@buriedatom5039

3 жыл бұрын

Have you seen the 8 bit guy? That's how I got to here

@RetroRepairGuy

3 жыл бұрын

That's good to know and yes I subscribe to him. I like his show and Retro Recipe. I'm really working hard and giving it my best and hoping it works out.

What do you like about the HA 330? It is very basic and not even the regular size of 43 cm for most vintage units if you want to stack with other units like tuner, CD player, cassette deck...

@RetroRepairGuy

7 ай бұрын

The best aspect of it is it's OCL circuit design. It's really sounds amazing and units with OCL circuits today cost a fortune. Also, the main reason I liked it as I stated in the series of a few videos I made restoring this stereo, is because it belonged to my Uncle in 1977 and we used to record stuff together on it so I have emotional attachment to it. Thanks for watching!

Seems similar to an old Sharp Optonica I am in process of fixing with a removable bottom plate. It has blown it's RIFA cap on the power supply section.

@RetroRepairGuy

2 жыл бұрын

Hi. I just looked as some pictures because I did not know the Optonica. I can see the similarities, are they also OCL type amps? I couldn't get that information. This is the one thing that made me fall in love with this amp as it packs a punch; I was really surprised. Will you post a video of the repair?

@AvidRetro

2 жыл бұрын

@@RetroRepairGuy I believe some of the models were OCL but cannot determine this on the 5101/5105 models. It's a nice sounding unit. I had some help on the audiokarma forum so looking to replace the rifa cap with a modern x2 safety capacitor. I will post another video when I do this.

@RetroRepairGuy

2 жыл бұрын

@@AvidRetro Yeah for some reason I only found out about the Hitachi being OCL from the Service Manual. Can't wait to see how yours turns out!

Hi everyone! The store is up and running. I'll be adding more items in the days to come as well as merchandising for the channel. Prices are in Canadian dollars. Purchases of items fixed by me will include a signed certificate of authenticity that states the item was fixed by Retro Repair Guy. Thank you for your support! retrorepairguy.com

If I may suggest: replacing thermal coupling compound under the finals, the TO3s, would be a good idea along with verifying whether crucial resistors have drifted in value another. Bias setting and DC offset, if present, is another set of adjustments worth checking on a unit of this age. There often is a PIO cap on the mains, which must be replaced with a modern fail safe cap. Was expecting a totally different testing to music blaring, 1k sine into dummy load while operating pot and switches to verify on the scope and via headphones whether spraying some contact was effective for a start. Nice unit, they don't make them like that anymore.

@RetroRepairGuy

3 жыл бұрын

Hi there! Thank you for the suggestions they are always welcome. While this was only the second episode, there are sometimes things I do off camera, like in this instance adjust the idle current of the output transistor which is done once the unit has been on for at least five minutes. However I chose a different direction for the videos and make them more concise; I don't want for example people watching me solder for half an hour or do any scope testing unless it is necessary. I don't want to make this show into a step by step "how to" that would last an hour without resolve but rather for people to experience a restoration process from beginning to end and experience closure, which includes playing music to demonstrate the unit is functioning in lieu of having a scope hooked up to it. P.S. As for the TO3s, there was testing done on them (off camera) and I did look for them but they, and every replacement, was always discontinued. Although they are working, if I had them available, I would have just changed them and included the process in the video.

@paulb4661

3 жыл бұрын

@@RetroRepairGuy Had some heatsink compound turn to powder after decades of service and especially in light of some of these TO3s becoming unobtainium, as you point out, solid thermal coupling is a must. I'm not suggesting replacing finals, just the paste, because ... they don't make them like that anymore ! Matching any trannies is a pain and if the manafacturer had a curve tracer at hand, the chances of getting it "more" right are slim, unless you have dozens at your disposal. As to longer vids, I wouldn't mind, but I get your point. Thank you for clearing that up !

@RetroRepairGuy

3 жыл бұрын

@@paulb4661 Agreed, you are absolutely correct and thermal paste should be changed after all this time. I'm happy to hear you wouldn't mind longer videos, it's always hard to find the perfect length without dragging and boring people. KZread's algorithm penalizes for a bunch of reasons such as people turning off your video cause it drags, click through rates, etc.

Nice video...but what about the meter LAMP which is burnt 99% of the time. How do we put in an led equivalent?

@RetroRepairGuy

Жыл бұрын

Hi! Thank you very much. Surprisingly the lamps on this unit lasted forty years. However, for the matching cassette that I restored, both lamps were burned. kzread.info/dash/bejne/iaCKsrqNgMqxYrA.html I replaced them with regular lamps as it keeps it original. Just like a regular light bulb you can of course replace it with an LED. You would need something like this as an example www.ebay.ca/itm/10-New-Cool-Blue-Axial-LED-Wired-8V-Lamps-Vu-Meter-Light-Bulbs-Qty-Avail/114221627132 I can't find them on Amazon but all you have to do is match the voltage to the existing light on your unit.

I have a optinica amplifier sm 1515 b if the power transformer goes bad can it still be fixed the part number is rtrnp0506afzz can it still be fixed and what about my output ic rh-ix1066afzz it is a sanken s-60w

@RetroRepairGuy

Жыл бұрын

Hi David. Very nice amplifier looks similar. The problem with the power transformers is they are very difficult to find new that match. Not like the old days. However, with a bit of fiddling, you could replace it with another but you'll have to have the service manual and make sure of voltages, etc. I find it simpler to purchase another used for parts. This place has it listed but says "not in stock" and "no substitute" but it looks like you could order it www.ued.net/ued/viewItemAction.do?itemCode=SHARTRNP0506AFZZ Because it's a Sharp part, many times the same part was used in another amplifier that was much cheaper (same with car parts for example). And you could purchase a used Sharp at a much lower cost. Here is the service manual ldsound.info/wp-content/uploads/2013/05/Optonica_SM-1515-H_service_manual.pdf For the rh-ix1066afzz there is an NTE parts equivalent NTEOBS-NLA. Some equivalent selling here on eBay www.ebay.com/itm/182776314839 Check it out and let me know. Hope this helps! Thanks for watching!

My latest video is out kzread.info/dash/bejne/iaOjk499g93JZaQ.html I restored an old drum machine that was extremely dirty. It's a Yamaha RX5 which is the same model used by many groups in the 80s including a-ha, Prince, Madonna and Vangelis. Hope you enjoy! I worked really hard on it.

Hi everyone! My newest video is out. I completely restore a rare Silver Label Commodore 64 computer. kzread.info/dash/bejne/dn6Cp8lxhJuzeaQ.html

BIG DISCOUNT on items for sale on my website for a limited time only. The items were restored as part of the show and will help support the channel. retrorepairguy.com/product-category/electronic/ There is also a new Donations link for the channel square.link/u/xikGzrwa where you can make a ONE TIME or RECURRING monthly donation. It's completely secure and all proceeds go to the channel. I will include your name in thank you credits of the video, if you give me permission to do so. If you want to donate any item to the channel, please get in contact with me by filling out the form on my Website retrorepairguy.com/contact-us/ and make sure to select the subject from the drop down list. THANK YOU ALL!

I have a retro NEC Audi Video Amplifier I need to repair. I'd like to have the schematic or the service manual for it. The model is AV-350E. Would know have or know where I can get a schematic or service manual? Thanks David

@RetroRepairGuy

2 жыл бұрын

Hi and welcome to the channel. I can't see it free anywhere but you can purchase a PDF for download from here for $17 www.servicemanuals.net/NEC/AV350E/515137/detail.aspx Please note that I am NOT affiliated with this company but I have purchased from there twice before when I had exhausted all options and was happy. They also let you download the first few pages so you can see what you are getting. Might take an hour before your download is available but I haven't experienced any problems. Hope this helps and don't forget to subscribe.

Where do you buy your audio quality caps and components at?

@RetroRepairGuy

2 жыл бұрын

Hi. I mostly get my parts from Digi-Key. Thanks for watching!

And ayeeeeee she's a spicy girl now 👌👌👌💖

Hi there , Can you post the parts list for us so we can order the caps :) thank you ! awesome video

@RetroRepairGuy

2 жыл бұрын

Hi Lloyd! It was over a year ago and I checked everywhere on my computer and I don't have a complete list. However I can do the following. The two large ones are 10 thousand microfarad at 50V. And here is a link to the specification and starting on page 11 of the manual the entire parts list is there. Just make a list of all the "electrolytic" ones. www.vintageshifi.com/repertoire-pdf/pdf/telecharge.php?pdf=Hitachi-HA-330-Service-Manual.pdf Hope this helps and thanks so much for watching!

Watch my latest retro restoration. A Panasonic S-VHS Reporter camera. kzread.info/dash/bejne/q46VydmIZc2nmJs.html

@gabrielr4270

3 жыл бұрын

Between this Hitachi HA-330 and the Teac Bx-550 which is better and more powerful? it will be true that they reach 100 watts according to the VU

Watch my latest video where I restore an old 90s Boombox kzread.info/dash/bejne/fnqZz5V6pMXAfZM.html

Hi I’m from srilanka, I to have the same amplifier and it’s getting really hot please advise what should I do thanks

@RetroRepairGuy

Жыл бұрын

Hi Viraj. When you say overheating, what exactly happens? Has the amplifier ever been fixed /serviced? All kinds of things can cause overheating. How clean is it inside? Dirt is something that can cause overheating. If it was ever fixed, I would check the wiring. Things like bad grounds can also cause this. It would also be important to remove the transistors, clean the heatsink and then put in new plastic or silicon micas and some new thermal paste. Also make sure the environment around the amp allows it to vent. For example don't stick anything that would block the the holes in the cover. Let me know and thanks for watching.

Hi. Just found your channel. I have a question. I have my 1970s stereo/ record player. It needs a new needle and.speakers do not work. I want it restored. I adore it. It's black and white. White speakers black plastic foam like speaker covers. The brand name begins with C.....like Carthart or something like that? Can you help me?

@RetroRepairGuy

2 жыл бұрын

Hi there and welcome to the channel. If you need some guidance or tips I would be glad to help however it's no feasible for me to fix these things as the shipping alone would cost a fortune as well as have the possibility to get damaged. At the moment as well, the show takes of most of my time. Let me know if you have any questions and thanks for watching.

@thatgirlmadge

2 жыл бұрын

@@RetroRepairGuy thank you. Can you think of brand names that begin with C....not Clarion...trying to figure out the brand of my stereo from the 70s

@thatgirlmadge

2 жыл бұрын

@@RetroRepairGuy and do you know a good source here in the US for vintsge stereo restore? Thnx Im in CO

@RetroRepairGuy

2 жыл бұрын

@@thatgirlmadge There should be label underneath or a sticker in back somewhere. I thought of Clarion as well but since it's not that I have a blank at the moment.

@RetroRepairGuy

2 жыл бұрын

@@thatgirlmadge Unfortunately I'm in Canada and don't have any contacts in the US for such things. Since not many advertise anymore and are probably hiding in a basement somewhere like I do, I would suggest either going to Facebook groups for vintage equipment or an online classified ads site. I would say try to find an older guy who was fixing these in the 80s and 90s because they normally have more resources for the older parts.

re: the large caps. "One for each channel" is completely wrong. They are used in a split power supply configuration, as are ALL direct coupled amps. One for the positive power supply voltage, one for the negative. The power from these is for both amp channels. If it were a dual power supply, there would be four large caps, two for each channel.

@RetroRepairGuy

3 жыл бұрын

Hi. I just watched it again and you are absolutely correct; it's one for positive and one for negative, not left and right channel. Thanks for pointing it out and thank you for watching.

I HAVE ALAPHA ARENA VINTAGE AMP MANY TECHNICIANS FAIL TO FIX IT

@RetroRepairGuy

2 жыл бұрын

I've never heard of this amp but unless there are lamps which are sometimes very hard to source these days, if it's solid state it should actually be easier to fix so I'm not sure why they can't. Thanks for watching!

Put a Technics badge over the Hitachi and I wouldn't even question it, the speaker termination on the back is definitely not Technics.... I wonder if it was out sourced? As for the power supply filter capacitors, you didn't say if you looked around for something that might fit better, even if it was rated for a higher voltage and capacity.... Which might have been large enough to fit the correct holes in the PCB (not that I have a problem with the final outcome) but I do believe that there was a good possibility that something might have existed that would have fit perfectly and apart from looking better, the amplifier could have benefited from the extra capacity.... Also, did you remove the TO3 output transistors to refresh the thermal paste? New old stock is very hard to find, new Chinese stock might not be as good as the original transistors even though they are 40 years old LoL... You certainly don't want them to die! I have a kit amplifier that uses the TO66 transistors which were Australian made, we haven't made anything down under in a very long time and those things are unobtainium! They were the 2N3055 before the 2N3055 existed and while I can use other transistors, even the Electronics Australia magazine which the kit amplifier came from in 1973 also showed how to use the then new plastic transistors instead at a later date but there's something special about those metal encapsulated transistors that used gold in their construction.... But the sound! I have more amplifiers than I know what to do with but it's my favourite! There's something that it's doing that the others don't, I originally got it because it looked very 70's and it was ugly and I needed something like that to gut out and fit a new power supply and class D amplifier with as much output power as possible, I wanted something that would shock and awe people but I made the mistake of plugging it in and listen to it while expecting it to be terrible ( I mean, how good is an amplifier going to be that came as a kit from a magazine right?).... Yeah I was hit with shock and awe! The ugly duckling turned out to be a swan in disguise!

@RetroRepairGuy

2 жыл бұрын

Hi Peter! I don't know if it was out sourced. It does have the "Made in Japan" mark and it was built in 1977 but obviously there were probably many parts similar and built by a certain company that were in many of the different units. I did not put as much explanation because this was only my second episode and I did not have a set format yet. As for the capacitors, yes I did look around with all my suppliers. I was unable to find perfectly fitting ones. However, I remember finding a site at the time that could manufacture them if for example there were 2-3 values in the same. Of course this was very expensive and since the other legs had no value, this was replaceable with a standard capacitor. But this was the closest match that I found so luckily there was that extra hole in the motherboard and the other leg fit in and the tiny jumper was the only solution. But they still grip on to the motherboard like the original ones. NOS I would never buy because caps have a shelf life of 15-20 years so even if they are never used, they dry up and you risk blowing the amp with New Old Stock. But transistors are OK if you can find them. Yes, I removed the transistors and put new paste and found quality thermo pads from NTE to replace the plastic ones. Again, I did not film or show any of this at the time whereas now I try to show/explain everything I do. You certainly don't want these transistors to die. I had looked before starting work on it if they could be replaced in case but no luck. I never turned it on before I began the work because I did not want to blow anything and I knew this unit's history since it was my uncle's and it sat there unused for almost twenty years. So I knew the transistors were OK but that the caps had to be replaced before I even turned it on to make sure not to blow them. You might enjoy a more recent video of a drum machine I completely ripped apart and restored. kzread.info/dash/bejne/iaOjk499g93JZaQ.html Thanks so much for watching!

👍hope someone can repair my pioneer as 6300 amp

@RetroRepairGuy

3 жыл бұрын

I looked it up, I saw you had a typo, the Pioneer SA-6300 looks very similar and from 1976 but I have never seen or heard it. I'm sure you can find a technician locally.