Beard P100 Mk II amp - UK Vintage Radio Repair and Restoration Discussion Forum

Richard · 21st Jul 2009, 8:54 pm

Hi

Looking for service data for this unit, can anyone help??

Thanks

Richard

Aub · 22nd Jul 2009, 12:21 pm

hi richard,

Sorry, can't help with the service data, but i would love to see some pictures of the amp. is it the one with four KT88's?

Cheers

Aub

Neil F · 22nd Jul 2009, 2:35 pm

I've serviced a few Beard amps and preamps. Service inf is next to impossible to find. The only place I've ever found that may have it is

http://www.beardaudio.com/

The chap who runs that site is the 'inheritor' of the Bill Beard archive, and may have a circuit for your P100. Be prepared for an eye-watering price, though!

Richard · 22nd Jul 2009, 5:59 pm

Hi

Aub - yes 4 x KT88, and 4 massive transformers, basically 2 separate mono blocks in the same case. I will post some pics here for you (I think it will be OK to post them in this thread, or should I open a new thread ? Mods please ?)

Neil - yes I have contacted and spoken to the new man when I was repairing a P80, not that helpful and ended most sentences with I can repair it for you, costs lots, very complex.......

Richard

yestertech · 22nd Jul 2009, 6:16 pm

How "complex" can an audio amp be vs. something like a B/W tele ?
I've just succesfully reverse engineered a schematic for an EDSION HFA12 amp ( 2 channel EL84 p-p ) which was built on a PCB, after finding out from the current owners of the brand that a schematic was unlikely.
I'm sure the same could be done.
The only issue really is setting the bias, if applicable and this could be determined via the "AOT" route.

Is the amp faulty or is this just in case ?

Andy

Brian R Pateman · 22nd Jul 2009, 6:17 pm

No problem with pictures being posted here Richard - we can always re-locate them if this thread develops into a repair thread, or a success story.

Richard · 22nd Jul 2009, 8:44 pm

Hi

Andy - I have not done anything yet apart from take the top cover off for a look, so I dont know, but I always like to have the data to hand.

Brian - OK thanks.

Richard

21st Jul 2009, 8:54 pm	#1
Richard Heptode Join Date: Feb 2003 Location: Garnant, near Ammanford, South Wales, UK. Posts: 657	Beard P100 Mk II amp Hi Looking for service data for this unit, can anyone help?? Thanks Richard __________________ BVWS member.

22nd Jul 2009, 12:21 pm	#2
Aub Nonode Join Date: Mar 2005 Location: Nuneaton, Warwickshire, UK. Posts: 2,039	Re: Beard P100 Mk II amp hi richard, Sorry, can't help with the service data, but i would love to see some pictures of the amp. is it the one with four KT88's? Cheers Aub

22nd Jul 2009, 2:35 pm	#3
Neil F Retired Dormant Member Join Date: Oct 2003 Location: Leicester, UK. Posts: 143	Re: Beard P100 Mk II amp I've serviced a few Beard amps and preamps. Service inf is next to impossible to find. The only place I've ever found that may have it is http://www.beardaudio.com/ The chap who runs that site is the 'inheritor' of the Bill Beard archive, and may have a circuit for your P100. Be prepared for an eye-watering price, though!

22nd Jul 2009, 5:59 pm	#4
Richard Heptode Join Date: Feb 2003 Location: Garnant, near Ammanford, South Wales, UK. Posts: 657	Re: Beard P100 Mk II amp Hi Aub - yes 4 x KT88, and 4 massive transformers, basically 2 separate mono blocks in the same case. I will post some pics here for you (I think it will be OK to post them in this thread, or should I open a new thread ? Mods please ?) Neil - yes I have contacted and spoken to the new man when I was repairing a P80, not that helpful and ended most sentences with I can repair it for you, costs lots, very complex....... Richard __________________ BVWS member.

22nd Jul 2009, 6:16 pm	#5
yestertech Nonode Join Date: Dec 2002 Location: Coulsdon, Surrey, UK. Posts: 2,135	Re: Beard P100 Mk II amp How "complex" can an audio amp be vs. something like a B/W tele ? I've just succesfully reverse engineered a schematic for an EDSION HFA12 amp ( 2 channel EL84 p-p ) which was built on a PCB, after finding out from the current owners of the brand that a schematic was unlikely. I'm sure the same could be done. The only issue really is setting the bias, if applicable and this could be determined via the "AOT" route. Is the amp faulty or is this just in case ? Andy

22nd Jul 2009, 6:17 pm	#6
Brian R Pateman Nonode Join Date: Jun 2005 Location: Western Lake District, Cumbria (CA20) - UK Posts: 2,136	Re: Beard P100 Mk II amp No problem with pictures being posted here Richard - we can always re-locate them if this thread develops into a repair thread, or a success story. __________________ Brian

22nd Jul 2009, 8:44 pm	#7
Richard Heptode Join Date: Feb 2003 Location: Garnant, near Ammanford, South Wales, UK. Posts: 657	Re: Beard P100 Mk II amp Hi Andy - I have not done anything yet apart from take the top cover off for a look, so I dont know, but I always like to have the data to hand. Brian - OK thanks. Richard __________________ BVWS member.