DC leak on Sony TA-E1000ESD pre-amp

[K-amps]

My Sony pre-amp 1000ESD is leaking about 2.12vdc on one channel. Works fine with cap coupled power amps but pops when I switch any function.

Before I go in a poke around, Anyone have a schematic or ideas what could be causing this?

thanks in advance!

K-

 

[biotgsj]

Hello,

I have the same problem on my left front output
and have the schematics for the TAE1000ESD,
which i included ...

I suspect the C803 but did not change it yet

... can you advise?

kind regards,

Johan

 

[biotgsj]

Hello,

I have the same problem on my left front output
and have the schematics for the TAE1000ESD.

if you give me an e-mail adress i will send them over
(this attachment (1,1Mb) is bigger than allowed for this forum)

I suspect the C803 but did not change it yet
... can you advise?

kind regards,

Johan

 

[biotgsj]

TA-e1000esd

Hello,

found that it was the switch transistor at the end stage Q804!

replaced with an 2SC2878 works fine now ...

 

[K-amps]

Great..

Now a picture of where that bloomin switch transistor is would really help.... My 1000ESD is still on the bench.

Can you email me the Service manual arifh (a) prodigy dot net

Is this Forum great or what!!!

 

[lrs_05]

tae1000 esd schematic

@ biotgsj

hello sir, can you please send me the schematics of TAE1000esd
I have a non working unit and would like to repair it...thanks a lot

my email is appacis@yahoo.com

 

[analog_sa]

Now a picture of where that bloomin switch transistor is would really help

You don't need a picture. It's a muting transistor directly across the output.