diamond d5 600.1, protect has 8.96vdc on speaker terminals.

[evianamp2011]

I got a diamond d5 600.1 that has both green and red (protect) LEDs on when given power. I measured 8.96dc on the speaker terminals. Below are my readings...if anything is "un readable" let me know so i can clarify.

9 pin read out, from left to right on my notes that are pictured above.

The read outs on my notes for the outputs (q108-115) are from pin 1 (left), pin 2 (center), pin 3 (right...last number). Hope it's not confusing.

 

[Perry Babin]

Post a photo of the vertical board and one of the entire board.

 

[evianamp2011]

14 pin ic on vertical board is a "14013b" & 8 pin ic on vertical board is a "s393f 118"

And this is what i found near c321 (80v 1000uf) don't know if it's electrolytic juice our just dirt.

 

[evianamp2011]

if you need clear pictures of certain areas please let me know and I can take some and post them.

 

[evianamp2011]

Also notice this trace was cut, seems like a ground.

Looks like it's a factory revision, not sure though

 

[evianamp2011]

Looks like the "kelna" caps leaked...hmmmmm i wonder why.

 

[Perry Babin]

Did you check the output transistors for broken legs and shorted transistors?

If so, post the DC voltage on all pins of the LM837.

 

[evianamp2011]

I found a shorted output (q114) and maybe q115 . But looking at the output's sink case half of them looked distressed (q112-115) the other half looks okay.

 

[Perry Babin]

It's likely that the 4080 has failed as well. If you have to order parts, order a new 4080.

 

[evianamp2011]

OK, will do.

 

[evianamp2011]

Parts just arrived, got the following...

-4080
-outputs (these where "backorder" so I had to wait almost a month before available)
-80v 470uf Nichicon PM
-25v 3300uf Panasonic FC


Tested it and got clean sine waves, got 36.6v prior to clipping.....dont know if this amp is rated at 2ohms (which I assume) or at 4ohms.


Thanks Perry for your help, another completed.