I'm full of admiration for this guy

Sir, God bless you for this video! You helped me a lot to repair a Philips CD753 for a friend. I have a masters degree in electronics, but it was 35 years ago! Your equipment is a dream for any hardware-software Specialist. I used to write some computer drivers, so you know what is it about. I just wanted to show myself, that I can still do it. But for now, I realized, that never ever again! I do not have the eyes for this anymore. But your video made it possible! Thanks a lot and greetings from Vienna!

Nice repair, that Arduino library is genius, there are some very clever folk around.

@petehillyer5444

Жыл бұрын

Yes certainly is. I made use of the Library for an "all in one" test rig specifically for these players

After watching this I’ve learnt there was a control protocol. It is never too late.

Hi Mark, enjoy the videos very much, i do the same thing but just as a hobby. Im about 4 miles away from you. I mainly do cassette decks.

Mark, you make it all so simple, you are a real diagnostician and a craftsman, totally competent!!!

Great video. Having the Arduino rig to test really takes the guesswork out of it. I particularly like the CD on the icy pole stick test.

This takes me back I used to repair CD jukeboxes 30 odd years ago, which used the Philips swing-arm pickups, the CDM-4, rather than the sled. There were no Arduinos back then, but we had a stripped down player for testing, and a laser power meter to check the laser.

PhD knowledge of electronics! Genius! Thanks for these wonderful videos. Please keep them going.

You are an amazing technician, thank’s for another great video!

Love your videos Mark, as Brucie used to say, "You're my favourite"!

Many mobile phone rear cameras have IR filtering these days, but the front camera tends not to. I always used that trick when checking fibre optic cables.

@gravyblue

5 ай бұрын

And if remote controls are working.

Superb Mark. Thank you for sharing that.

Another excellent video, Mark

Impressive! I look forward to your videos.

Brilliant repair!

Great repair and a very good CD :)

You are a bloody genius.

Would love to have seen the laser output from the phone camera. Thanks for another great video!

Excellent job!

Nice repair Mark!

Back in the day, I used to use little light sensitive sensor circuits built into a pen to test these lasers and for also checking TV / hifi infra red remote controls etc

Pure genius.

Magnifico vídeo , saludos

ant a nice repair good job happyman !

super channel mark

The linear sleds failed in the early days so the juke boxes skipped. We replaced scores of brand new units out on sites in NSM juke boxes for a company in Twickenham in the late 90s. A modification kit was sent out so the thousands sitting in workshops could be repaired and used, as they were brand new and £400 at the time. Also the idea that CD lasers wouldn't age like styli because no friction was rubbish. In the worst of them a feedback loop kept increasing the transmitter diode current to maintain sufficient receiver diode current in the optics until the heat killed the laser. That's what's happened here. The Philips CDM 4/36 was the best, with radial tracking. We had one on a site for ten years before it needed servicing.

Those lasers are called Philips LDGU (Laser Diode Grating Unit). The main feature is, on the main package, we have diode emitter, diode receiver, and prism. They are all terrible and cheaply made. I've to say, that diagnostic mode is amazing!

That is really cool. I wonder if this method can be used for Technics-Panasonic players or replace the mechanisms with a Philips and an Arduino to bring the CD functionality back to life.

Damn, you are GOOD.

Love ur video

Hi Mark. Thanks a lot for the great video on CDM-12 OPU repair. Good job and nice videoes. I have 2 questions. 1. The test stick, where do you get it, or how to create them ? 2. Regarding the Arduino test rig - Do you have an wirring diagram/schematic ? Thanks in advance

Hi Mark. Love your videos. So you understand the DSA Protocol now? :). LOts of good information out there. I am a jukebox repairer myself. And have done a lot of these players as well holding a little stock of CDM12, Pro and Pro2 players. I actually build and sell a complete test rig for these players, have sold all around the globe to the jukebox fraternity. Based on Arduino, but with built in display, push buttons and 5 / 9V regulators too. Just needs a set of powered speakers and a regulated 12V power adaptor or bench PSU. Wanted to show you here. But cant attach images sadly.Keep up the great videos.

@mikedariabaab1821

Жыл бұрын

Pete, do you sell CDM12's? Looking to replace the one in my Wurlitzer Rainbow Jukebox.

@petehillyer5444

Жыл бұрын

@@mikedariabaab1821 I have a very limited supply. But would would prefer if yours can be repaired. If you are in the UK. I could help, but feel since this is Marks video, it is a little unfair to hijack it. I can repair these, I do quite a few, which is why I developed an all in one test unit.

@TheTomfortune

Жыл бұрын

@@petehillyer5444 Hi Pete, how much do you sell the all in one test units for?

@S-Theo

Жыл бұрын

I wonder if you can help me to fix my tape cd recorder combo. Tape side is OK there is some issue with CD. I already asked like 100 people and no1 was able to help me. Its Tascam CC 222 with CD slot loading mechanism.

@jimp3975

6 ай бұрын

I would like to buy your test fixture for players

Lol, of course he plays the Stones and start me up!!! Mark, I want to hit the pub with you!!!

It seems that a lot of pickups just get blinded by dust. Cleaning the lens is usually NOT enough. I have taken many apart and cleaned ALL the optics in a few of these (as an experiment) and they actually worked fine afterwards. Note: This is an extremely delicate job and not worth doing for a $30 pickup, but it was for science. Now, a pickup that is unobtainium, this is well worth a shot.

Wow I used to service those from jukeboxes and those lasers were always failing. Can't beat the old CDM12 :)

Thanks for sharing your amazing knowledge so interesting 🦘

Nice job Mark. But it makes me wonder what was wrong with the other one. It was drawing so much power, something short on it maybe. Should of put it on your bench psu and feed it some power. Let the magic smoke point the way : )

Hi Mark where can I find info about the interface board you made to communicate to the player from your PC? Can I buy that and the interface ? I am fascinated and want to learn more about those players. Thank you.

No $#!t? You rock! 🙏

Looks like the old Philips CDM-12!~

It's always the laser when there's a problem. Reminds me of my first cdrom burner from the late 1990s. I was an early adopter, and the blank disks were expensive, like $3 each. Lost every second disc. 11 months into the warranty, turned out the laser was faulty from the factory. Replacement unit worked fine for years.

@ToddSauve

Жыл бұрын

We had a CD player in the mid 1980s. The laser died after a few years and the repair shop told us they could not replace it. Said it was built that way and it was cheaper to buy a new CD player. The beginning of the throwaway electronics age--which I hate!

I loved you in buster with Julie Walters and Larry lamb.

I didn't know that Phil Collins understood electronics!!

👍👍👍

Hey Mark. Just bought a “Playmate 200 Selection” wall mounted Jukebox. Is this something you could help with? Thx

A while back I was trying to fix 2 jukeboxes with those players and was told thatthe lasers were no longer available - where did you find those?

Hi mark, I have the same Sound Leisure cd playing jukebox, and it all works apart from the disc will spin and stop, spin and stop. |ve tried all the usuals, and now coming to you after watching this great video. I wonder if you can help?

Any information on my NSM digital thunder cd player

Hi marks. Can you share the arduino sketch for cdpro 2. I have the same device. I want to try cdpro 2 with arduino. thank's.

hi, please send a link if possible for the replacement laser, that's what I need..

Hey Mark, just wondering where you purchased the replacement laser for the cd player pro?

Hi. not sure you can help me out I have a Wizard wall mounted cd Juke box it is quite old. and now and getting credit error singe. I do not know the code to cancel this . would you know where I could get it. thank you in advance.

Where do you get those parts from. Mine broke down today 😢

6 un grande miticho

Why no fresh lube on the sled rails while you were in there?

@MendItMark

Жыл бұрын

A good question indeed! Well, it didn’t have any in the first place, and the bearing surfaces are a waxy plastic ( acetal or nylon 66?). It did move very freely, and it’s not under any significant load. I also remember a physics teacher telling me that a lubricant has to be an adhesive first. Go figure… Thanks for watching!

Hey there where do you order cd lazer parts to?

@MendItMark

Жыл бұрын

Various eBay stores do them, you just need to know the correct model number. A bit of Googling helps with that.

Hi Mark I have a jvc l-e 600 which has lost all power to it how can I get this to you so you can look at it cheers Paul

@MendItMark

Жыл бұрын

Hi Paul, you can find me at www.perton-electronics.co.uk.

4:01 found Hal 9000 hiding in there

How many CD players could I have saved from E-waste? ps Is it still Telford "New Town"?

The laser may kill the phone's CMOS.

That must be what's wrong with my cd unit from the jukebox 😢😢

Actually a sony design original Philips laser didn’t have a straight laser travel

Co to za naprawa to wymiana tylko uszkodzonej części a nie naprawa.

i missed U

love your channel, the opening music....... not so much

I noticed you put the CD upside down. Are you aware of that it is the upper side you need to be careful with and not the underside? If you get a scratch in the plastic the data is still there, but if you scratch the upper side (the reflective layer) the data is lost.

@howardtaylor229

Жыл бұрын

No You are upside down

Your videos are usually packed with very helpful information and techniques but you fell a little flat on this one. There was the tidbit about replacing the laser but in my view the meat of the video was the Arduino board and the script you ran to assist with triggering the unit. THAT is what you should do a video on. THAT was the most interesting part of the video but you walked away from us with the secrets in tow. Please do a video on that board and the scripting software. Thank you - your friend Linus.