True about the fasteners. I bought a box of cheapo ziplok sealable baggies. Each screw (or group of identical screws like "face plate") removed gets put in a bag and labelled with sharpie.

I am not a electronics repair guy, but I fixed my Samsung TV using your techniques of tapping on the boards and resoldering. My problem was the transformer from the heat cycle broke the solder joints. Desoldered with a ribbon and resoldered and bam fixed. Also cleaned everything inside as the original owner used a coal stove and the inside was just coated like dust paint inside the unit. The TV is still working perfectly. The age is roughly when the flat screen TV come on the market, my friend just wanted it gone. He paid 4K for the unit new. I scored for sure. Love your video, lots of great information for the novice who understands electronics to some degree but not totally.

"You guys who don't have any experience - you're gonna get some". Great quote !

What do you do with knowledge..

Learning electronics via KZread. I had no idea how much there is to it. Certainly a great way to keep your brain sharp!

Good stuff! Hope to see you do a video on the 2230 someday.

Great video.

LOVE yer videos!

Buna dimineata! In primul rand imi cer scuze daca in acest mesaj sunt greseli tehnice - nu ma pricep asa de bine! Am un amplificator AKAI AM-U310 din 1982 - original (MADE IN JAPAN) - RESPECT MAXIM pentru AKAI, nu stiu ce mai rezista in zilele noastre 40 de ani (si a fost destul de solicitat) si cred ca inca mai rezista! Am instalat un nou radiator si o noua carcasa - ambele din cauza problemei stiute cu incalzirea STK 3042. Chiar de atunci il am. Ar merge si acum, dar cand il bag in priza, fara nimic conectat (doar grupul A ale carui fire au fost direct lipite cu pistolul de lipit, in interiorul amplificatorului pe placa de conexiuni din cauza ca, contactul in acele piese de blocare a firelor, din plastic care se rotesc - rosie(i) si / sau neagra(e) din spatele exteriorului amplificatorului, nu mai era un contact fest, celalalt capat al firelor nu a fost conectat) , n-ar fi trebuit sa se auda un clinc? Acest clinc s-a auzit tot timpul pana atunci, dar nu stiu ce era conecat si ce nu. Ce trebuie sau ce nu trebuie conectat pentru ca acest clinc sa se auda? Acest clinc nu s-a mai auzit imediat dupa ce am pornit amplificatorul, inainte cu cateva minute am ascultat o melodie la un volum mai ridicat pentru ca era prost inregistrata si am fost nevoit, timp in care PC-ul a intrat in standby, s-a auzit un zgomot puternic in boxe (sunt boxe mari si multe plus un subwoofer mare, puse 2 pe grupul A al amplificatorului si inca una si subwoofer-ul pe grupul B, cele 2 de pe grupul A au 16 Ohmi, iar cealalta si subwoofer-ul au cate 8 Ohmi, din cate stiu amplificatorul face paralelul si astfel iese o impedanta de 5,33 Ohmi care se incadreaza in 4-16 cat permite amplificatorul) - un pocnit puternic, dupa care am pornit amplificatorul si am observat ca nu se mai aude clincul, dar cred ca nu s-a auzit pana atunci nici un bazait ca o frecventa a retelei care s-a auzit din interiorul amplificatorului. In acelasi timp am observat ca una dintre grilele de ventilatie de pe exteriorul carcasei era putin obturata - sa i se fi tras de aici sau din cauza pocnitului puternic? Ce inseamna ca acel clinc nu s-a mai auzit? Este posibil ca amplificatorul sa fi fost protejat de acel pocnit puternic si / sau de acea posibila supraincalzire cauzata de obturarea partiala a uneia dintre grilele de ventilatie? Cumva sa nu se mai auda acel clinc din cauza ca releul de protectie la scurtcircuit sa se fi inchis? Ce rol are acel clinc? Este posibil ca amplificatorul sa se fi protejat cu vreo protectie si sa fie functional? Daca da, cum il fac sa functioneze din nou? Oricum, in orice caz, cum il fac sa functioneze din nou? Inainte ca acel clinc sa se auda, volumul trebuie sa fie la zero? Cu ceva timp in urma, mult timp s-a auzit un harscait / troscait / trosnit / crantanit (crackling - am vazut ca multi au avut aceasta problema la AM-U310, dar nu stiu cum se traduce) pe boxa din stanga a grupului B, cateodata chiar nu se mai auzea deloc si-si mai revenea singura, dar e intampla sa nu-si mai revina, sa aiba si asta de-a face?

Great video. I have a similar problem (intermittent) with my Pioneer SX 1980. It was working, then both channels totally silent. After a few minutes tried it again and it worked for about a minute, then same problem. A few weeks later tried it again and it played at least an hour but could only get FM above 100 Mhz. Some kind of gremlin in this thing for sure. Also, some genius has taped two little magnets to one of the relays (protection or speaker I'm not sure). Both of these relays are on the PSB. I'm considering getting the re designed PSB for this thing from Canada just to upgrade it. Didn't mean to write a book so thanks for the video.

I have a Marantz 2226b that has one channel out no buzz ,no distortion just nothing. The other channel plays fine . I'm guessing op transistors at this point . This video should help me since it's a similar unit . Thanks for the videos ,they are very informative .

When you test with the multi meter do you just ground the black lead to the chassis of the receiver?

Good lesson. I realize the camera angles make it difficult on you. Thanks.

So what if I do hear the “click” from the speakers when I turn it on but when I go to play anything, fm, am, tape, aux no sound comes out of the speakers not even static

Good morning. Thank you for your videos. I have a question about where do you source capacitors and other parts.

This tutorial is awesome, gives me info about my 2245 sound issue. I also have an Optonica SA-5201 that has a flickering power issue when turned on. Sometimes it goes away, sometimes not. The FM stations have static when the power is "flickering" Would you have a tutorial on that issue?

I had this problem however don't some receivers have a AC relay ?

Thanks for this great video! It got me to thinking. Of course, it only makes sense to prophylactically replace all the electrolytic capacitors in 40+ year old gear. But wouldn't it also make sense to do the same with solder joints?

Awesome video truly enjoyed it felt like I learned something. This seems to be such a common problem with so many vintage receivers. Two of my seven receivers have recently had the same type of issues.

I started with kits knight or hh scott .my kids started with switch or lightbulb old toaster(didn't make it)I now can say one of my kids does micro soldering.