[Sub-10 / Sub-12 / RPW-10 Repair Blog]

As I said, all the power transistors in the sound amplifier and power supply turned out to be working! The only thing I could find fault with - you can see in the photos...
Thank you again for your help! The owner of this device called me a magician and left very pleased(But it’s not about money).
P.S. I have a bunch of exclusive stuff in the repair archives, therefore, I will be happy to help you with any information available.

[Sub-10 / Sub-12 / RPW-10 Repair Blog]

On 4/28/2020 at 7:20 AM, ngen33r said:

I would recommend removing parts from board. Clean good, put tape on back of the board and fill hole with epoxy.

I will send the pictures in a message.

Failure of BASH board causes the resistors to burn like that and damage the board.

thank you bro! Now I can try to restore it! I'm not sure I can do it fast, but I will write here about the results after...

[Sub-10 / Sub-12 / RPW-10 Repair Blog]

On 4/13/2020 at 3:33 AM, ngen33r said:

 

That board is not worth fixing. I have several of those in my graveyard. Toss it and replace the amp.

 

You would have to do epoxy board repairs, add new copper planes, rebuild the bash board, recap the entire board, replace the outputs and pots at a minimum. Scrap it and get a "good condition" broken amp that hasn't almost caught on fire.

 

I agree with you that this my undertaking is a big waste of time. But a mail package with a new board from you to my region of Russia - Orenburg - also not an easy way out...Therefore, I still wanted rebuild my bad board.And I just wanted to remove the entire burned-out piece of the board, replacing all the tracks connections with a solid surface mount. And the most interesting thing is that all the output mosfet transistors turned out to be working and in the power supply is also ok! (I don’t even know what made this shit so hot - apparently heating and bad tin soldering disturbances on two 160 oHm resistors) 
So if you help me with a photograph of the back of the board, then I would venture to revive this and Then I’ll write about the results here + a photo of all the work

[Sub-10 / Sub-12 / RPW-10 Repair Blog]

I agree with you that this my undertaking is a big waste of time. But a mail package with a new board from you to my region of Russia - Orenburg - also not an easy way out...Therefore, I still wanted rebuild my bad board.And I just wanted to remove the entire burned-out piece of the board, replacing all the tracks connections with a solid surface mount. And the most interesting thing is that all the output mosfet transistors turned out to be working and in the power supply is also ok! (I don’t even know what made this shit so hot - apparently heating and bad tin soldering disturbances on two 160 oHm resistors) 
So if you help me with a photograph of the back of the board, then I would venture to revive this and Then I’ll write about the results here + a photo of all the work

[Sub-10 / Sub-12 / RPW-10 Repair Blog]

Hi! ngen33r. I got you a problem with the plat Sub-12. And this board just burnt to ashes, damaging all the connecting tracks.With the help of your photos, I was able to restore this from the side of component installation, but I do not know how it was on the back of the board.I would really appreciate you taking photos here of this back side of the board?
I have experience in repairing radio equipment and have tools, but this sub - 12 is very rare for our litle city of Orenburg and two days of searches on the Internet did not bring me luck in obtaining a service manual or other useful information. And all the most useful links on the Internet lead to you! I really hope for help with photography and of course thank you anyway!

[Sub-10 / Sub-12 / RPW-10 Repair Blog]

On 1/14/2020 at 6:52 AM, ngen33r said:

SYNERGY SUB-12 PLATE SERIAL 06230184

 

This amp was blowing fuses. The PDC control board failed and took out the mosfets. I had to clean and rebuild the PDC, replace the fets, replace Q5 and TH3. TH3 is almost always bad when fuses are blowing. After the board was working, a full recap was done on the amp.The active crossover was especially fun due to all the damn glue used.