That's a good example of restoration where engineering of the day allowed space for the modification with at least the same, or better quality result, with reliability as well. I have an Akai AM U03 unit, which needs the same work, (it uses the STK 0040 II, and STK 3042), but I'll firstly try and get the original IC's. My supplier has the STK 0050 II, which is just a higher voltage rating than the STK 0040 II. Thanks for the post. It means I can restore it with confidence.

Amazing that you can leave all those holes where the STK has been and it all still works

The original sanyo STK modules sounded phenomenal. unfortunately manufacturers never fitted adequate cooling too them and they ultimately burned out after a couple of years, the new STK fakes are not worth bothering with, its much better to replace them and fit a good quality class d circuit or high end toshiba TDA.

Nice fixing! right now, i'm not feeling alone in this world, almost the same tecniques in common sense fixing and improving having in mind the thermal efficiency are my checklist in any repair that i done and will do. very nice video, greetings from colombia.

The first video of yours that i've watched, Came here from a shango066 recommendation, wasn't disappointed excellent content.

Totally enjoyed your videos. Very informative!

Hi Jordan. I enjoy and learn from all your videos. Happy to hear you have a 1000 Subscribers, Has always I Liked,Shared and added to playlist. All my best. Bobby

Fantastic! Ive thought about doing this myself but hadnt seen it done. Im a huge fan of these chip amp boards

Hello Jordan. I learned something new. ground loops.

Thank you for your sharing your experience.

Thanks Jordan,,, that was really good. btw,,,,, congrats on the grand.

Thank you very much. I suspected something like this would work on the STK powered Amplifier/Receiver units.

Great explanation, helped me with the info about ground loop

i love it when people figure out fixes like this. Theres a guy online that has designed replacement STK0050 and 0080's from all new parts you can buy from mouser. he even designed custom PCB's for them. and his prices are very good. only $10 for a pair of boards. i plan on using them to replace the STK0080's in my Fisher CA-800

Awesome! I have a small guitar amp that uses an SDK that burned off the numbers. This gives me ideas to resurrect it.

Great video! That was quite complicated fix. If I could fix some amplifiers, it could be just shorted output transistors and emitter resistors or shorted bridge rectifiers. :)

I have a broken pioneer sx-680 with bad stk and I just came across a Yamaha r-300 and was going to buy that instead but I learned about the stk’s and I changed my mind

Jordan, thought I was messy but your workshop is a tad untidy, and your scope wants you to give it a wash.. I used those modules with a bluetooth receiver and made a nice little bluetooth amp.. cheers T

You are numero 1.

I have used the TDA7293 to replace STC modules in a number of amplifiers. They are OK in most with 4 ohms but only with programme inputs. Everything gets very hot with sine wave testing, in fact exactly as it did with the STCs. Most domestic amplifiers are under sinked and many give ratings for 6 ohms...who makes 6 ohm speakers? very few. The TDA7293 also sounds better than the STC and somewhat more reliable. PS Thank goodness you don't play music while making your vids!!

@Jordan Pier great job!!!!

Sunt integrate foarte bune,👍👍👍⭐⭐⭐

Listening to this video with my homemade stk442-090 amplifier, but I had luck to get original IC from 90s :)

chemwick is number one, works where others lift pads... and kester 44 solder in 63/37 alpha solder mil spec is great also..

I would recommend soldering straight to the modules. I've has some bad luck with those cheap terminal blocks.

Very good

That chem wicks better then all the other brands I tried ,pricey but worth it,may I ask what size are you useing.The one I ordered was a little skinny .

I'd like to replace a STK4121II (18 pins) with a TDA7264A (11 pins) but TDA don't have a by-pass pin and L and R IN (negatives) too. Is it possible? There are modules to buy or to DIY? Thanks!

Hi Can you please tell me the equivalent transistors of B1254 (2SA1263), D1894 (2SC3180). its really hard to find to me..

I wonder if those could replace convergence Ic stk's in a Toshiba projection tv.

Perfect i didn't know that this is possible !? 😕😯

Can u do a video on how to test the actual stk module to check and see if its faulty or not

Does anyone know the p/n of this yuan-jing module. I can't find one like this, only far more complex ones which I definitely don't need.

Super sar

Hakko 936 has been discontinued 2010-2011, replaced by 888. :) I'd have an urge to lop those connectors off the amplifier module PCBs, shortening the modules, if they prevent the modules from fitting nicely.

What you should was just remove to two inner fins and mount them Horizontal on the heat sink. Great video though, nice work.

please help! Can I replace power amplifer stk032 with another power amplifer? Thank you very much!

Hi Jordan, how does one measure if the stk is bad ? I have an akai am a2 with no relay engaging. Almost all the pins read aprox 40 volts on the stk. I know how to determine faulty output pnp npn transistors but how do i measure these stk modules ? Kind regards

I’m glad I stumbled across this video as I’m just about to do the same to my R-300. Question, and this is for you Jordan or anyone else. You removed the emitter resistors from the board as your TDA7293 had emitter resistors on it. I’m using a TDA7294 and using a very common board that is used with these. They do not have a built in emitter resistor and I see that most boards for the 7294 don’t. I see that people hook up their speaker direct to the outputs of these boards. So, should I too remove the emitter resistors? I’m guessing they’re not needed???

Hi Jordan, enjoyed your videos. I am installing two TDA7294 bds. in a Wersi organ power chassis. It has two inputs that went into the old OM961 amp. modules, inverting and non-inverting. Which input should I connect to the TDA7294 circuit bd? I am thinking the non-inverting? And, it has a bootstrap wire, that also went into the OM961. Do I use the bootstrap? Thank you, Jack.

tda rocks...but dear? why don't you think about replacing with tda8950 class d amplifier???

thanks for this video < i have sansui AU-X111 Integrated Amplifier the stk 4151x not available i can equivalent to Tda7293 and how i can loop the TA7317 Protector ic to make relay on > for last minute for this video i cant see and understand what you test or check thanks >

There’s room for a fan on the back of the heatsink

These amplifiers with these power output modules like this don't last very long I had a Technics and everytime I will blow a module they was very expensive I think around $80.00 on the end I threw the Technics away I brought me a Onkyo amplifier it's been like two decades and up to this day it's still working.

Transistors and stuff like that, but right now, we'll stick just to transistors... but how well do they survive outdoors??? I know where there's a few old devices just laying around rotting. I've considered going out and harvesting some parts off of them. Oh yeah, how about power transformers?

hi jordan i have an old akai am u02 amp with the stk 3042 which has started clipping the left channel when it heats up , ive used freeze spray which puts the clipping led off until the heat builds but getting a new stk is near impossible.... can i fit these TDA modules

add paste flux to ordinary wick for the same performance . i use oaty plumbers paste flux . i also REMOVE it ...

Sir good day so my concern is i have a power amplifier Technics and the power IC is STK 2068 II but i have a problem which is i cant buy this kind of power IC so pls i need to replace but how can i order and how...many thanks...

Great video. I'm gonna do this on a Sankyo SRC-2020. Do I no longer use the feedback and bias wires? Thanks

Hi Jordan. This is the best video by far. I just blew my Kenwood STK4172II. I am going to upgrade to this module. Two questions: Can I increase the amp watts from 100 to perhaps 200 or more watts. Can I look for a 12v power source on the amp and add a pc fan just to cool down the amp.

Sanyo Electric, which manufactured the "STK Power Pack", has gone bankrupt. Sanyo Electric is a Japanese company.

уф. я уже подумал здесь будут шоколадку анатомировать. но... все банально просто.

are those mono or stereo modules?

Does the tone control still work?

Alguien me podría decir donde puedo encontrar esos TDA de biena calidad aquí en México, ya que los consigo por 6.5 dolares pero son Chinos.

Can anyone recommend where to buy a STK 3076? thanks

So that is how a solder wick is supposed to work... I could not believe my eyes, I am throwing out all the wick that I have at the moment..

What does it sound like?

Pinout please

Πως καθαρίζουν. Τα κυκλώματα ενός σ

Bad assembly work. It would have been enough to remove two fins from the heatsink to put the modules side by side horizontally and solve all the problems. Pessimo lavoro di assemblaggio. Sarebbe bastato eliminare due alette dal dissipatore per mettere i moduli affiancati in orizzontale e risolvere tutti i problemi.

a test music !!!

That 'scope is disgusting. Shame on you!

Fake STK... , just open it, heard that even TDA7293 can be found fake these days , for a value around 3 USD ....sad

28:40 a bird?