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Power unit from hifi problem

philippe

Sep 1, 2015
2
Joined
Sep 1, 2015
Messages
2
Hello
i do have a hifi amplifier

two compoennet is geting hot very fast, as soon as i start the amplifier

On transistor had failed
I changed it , but as soon you start the power , it is getting hot verry

on the schema it is the Q5 ans also R10 is getting hot

Any idee , i did have problem to understand
R16 ,D5 look ok
i did have 15volt on U1 pin 15
on my bord R42,R43 and Q7 is missing or shorted somehow

see the file here
https://drive.google.com/file/d/0B2Cwu0IkTCvtV0xGOGFTREVEcWs/view?usp=sharing

You can find the full service manual just google
labgruppen_fp2400q_v02_amplifier_service_manual


thank you
 

Alec_t

Jul 7, 2015
3,587
Joined
Jul 7, 2015
Messages
3,587
The linked image is too low resolution to see the component numbers clearly :(.
 
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