desolder R10 and R12 and pull them out
check again voltages at R7 and R8 , write them here
ground both inputs while doing testing like these
Across them?
R7 - .04
R8 - 8.43
R5 is correct? 4.75Kohm. and not 47.5kohm.
Yes.
Across them?
R7 - .04
R8 - 8.43
try to desolder R9 and 11 and check R7 and R8.
i think Q7 is your problem.
you ment Q5 and 6?when i measure from chassis ground to source of Q4 and Q5 I get 2 ohms is this normal?
I get 1.5 ohm from chassis ground to Drain of Q8 & Q7.
All other pins appear open to ground.
pictures
pictures
pictures
Attachments
you ment Q5 and 6?
yes sorry, the mosfets
Ok, those look decent, but we need to be able to read the printing on the board.
Where is the output?
Do you have a link to the PCB anywhere?
Mosfet SE class A JFET input power amp stereo huge PCB! | eBay
Ok, those look decent, but we need to be able to read the printing on the board.
Where is the output?
Do you have a link to the PCB anywhere?
no it do not look okei.
you have only +24V.
when i measure from chassis ground to +24 -24 points on pcb I get both.
connect pluss from left PSU to plus in on amp. minus from left PSU and plus from right PSU together and to amp ground. minus from right PSU to minus in on the amp.
Yes i did this.. it is strange because both boards do the same thing?
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