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christophertay 16th September 2004 03:53 PM

anyone b&o penta1 schematic?
Hi, does anyone has the schematic for b&o penta 1 amplifier?

JensRasmussen 17th September 2004 04:47 AM


christophertay 17th September 2004 05:04 AM

Hey Jens,

thanks for the diagram. Do you also have the parts list?


JensRasmussen 17th September 2004 07:04 AM


I have the complete service manual, but all values are on the schematic.


OliverD 17th September 2004 07:04 AM

In case you need to replace the output devices, under no circumstance try to buy original Toshiba 2SA1302/2SC3281! They are long gone and all you get is fakes.

JensRasmussen 17th September 2004 07:53 AM

They are replaced by 2sc5200 and 2sa1943


djk 17th September 2004 09:01 AM

No wonder the Penta sounded so bad, LF353s and polarized electrolytics in the signal path.

christophertay 29th September 2004 10:51 AM

tried changing the output amp. but still no sound.
amyway the problem of my penta.. first there is no sound when turn on, two it does not switch to standby mode when the is no signal.
can anyone help.


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