[SOLVED] Amplifier Board Repair

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strahd_von_zarovich

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Hi everyone,
While I was testing an amplifier board, I accidently short circuited the output and damaged the IC below. I searched for it's device marking on the internet but I coulnd't find it.
Here is some information if it gives any clue:

Pin-1 and Pin-4 are short circuit on the board.
Pin-2 and Pin-5 are short circuit on the board
Pin-3 : Connected directly to the -VCC(-15V)
Pin-6: Connected directly to the +VCC(+15V)

It doesn't have any GND pin. I think it is an Opamp but I coulnd't find it's manufacturer. It's in the final stage of the amplifier, and It can provide nearly +/-14.6V at it's output. I am going to provide more information after I figure out it's connections.

 

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D.A.(Tony)Stewart said:
short circuit on the board or in the IC or don't know?
Click to expand...
D.A.(Tony)Stewart said:
short circuit on the board or in the IC or don't know?
Click to expand...
Dear Tony,
I desoldered the component, they are short circuit on the board.
Pin-5 and Pin-2 are connected to the another opamp's output.
And either Pin-1 or Pin-4 is output. I think with these connections it is less likely an opamp.
 

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Last edited:
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Dear Tony, thank you very much for your help, it really looks like that .
It's NXP's NPN/PNP transistor model which is PBSS4160DPN.
 
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