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Old 21st July 2006, 12:32 AM   #1
kopite is offline kopite  New Zealand
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Default Beard P100 Amplifier

Would anyone have a schematic they could let me have a copy of please?

Thanks,

Phil.
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Old 21st July 2006, 04:01 AM   #2
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Default Re: Beard P100 Amplifier

Quote:
Originally posted by kopite
Would anyone have a schematic they could let me have a copy of please?

Thanks,

Phil.
I wanted this for a while now. E-mailed a lot of different folks but no give. I never did post to DIY, good luck, still I'd love to see this schematic too.

Cheers,

Shawn.
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Old 21st July 2006, 09:31 AM   #3
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You will not find a schematic. Bill Beard had a policy of not releasing schematics to the public. The present service dept continues the same policy and will not release schematics, so that's it I'm afraid, unless anybody has reverse engineered anything.
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Old 23rd July 2006, 06:52 PM   #4
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Cool Something about this...

Email can help you

Regard
analog guy
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Old 23rd July 2006, 06:54 PM   #5
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Thumbs up If you don't like PP Amplifier, this amplifier will change your mind

Super Durable Tube Power Amplifier, but already fixed by me !!!

Regard
analog guy
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Old 23rd July 2006, 11:45 PM   #6
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Default Re: If you don't like PP Amplifier, this amplifier will change your mind

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Originally posted by ANALOG GUY
Super Durable Tube Power Amplifier, but already fixed by me !!!

Regard
analog guy

Cool pics of the interior!
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Old 24th July 2006, 02:08 AM   #7
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Exclamation I fixed only switch !!!

I don't have a schematic but I can send you many pics via email.
I fixed it 2 years ago, only switch on-off broken !!! circuit is very good health !!!

Regard
analog guy
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Old 15th November 2009, 02:00 AM   #8
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I just bought a non-working P-100 but it looks different than the one in this thread. I think mine must be an earlier version.

The amp has a bias issue on one channel. The amp has a board with pots to adjust the tube bias (see right side of picture below). I believe the board connects to the cathode and then there is a 10 ohm resistor to ground. When I first powered up the amp with full voltage both of the 10 ohm resistors on the bad channel burned out. I thought the problem could be a bad cap in the bias board. Today I replaced the caps and the burnt resistors. I powered the amp up and thought I solved the problem. I had the amp on for about 10 minutes and began adjusting the bias to the .5 volts dc documented on the bias board. When I connected my multimeter to the output side tube on the bad channel I noticed the voltage begin to rise. Before I knew what happened the 10 ohm resistor flashed and it was gone. Any suggestions what to try now? I have tested the tubes and they all test good.
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Old 15th June 2011, 08:03 AM   #9
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Amplificatore a valvole Beard P100 100W | eBay
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