Anyone Have Info On Triode Board For MK IV?

Zedguy · 24th October 2008, 12:41 AM

Hey guys,

I just purchased a pair of Dynaco MK IV that have the Triode Electronics board (with the dual 12AU7). They are not working properly and unfortunately the person I bought them from gave me no info on the Triode boards, bias pots etc. Anyone have any info they can send me on this? Many thanks in advance.

llwhtt · 24th October 2008, 01:32 AM

There's a schematic of the circuit on Triode Electronics website, in the Dynaco boards section.

Craig

llwhtt · 24th October 2008, 01:35 AM

It's under the "more info and schematics" sub title.

Craig

Zedguy · 24th October 2008, 01:43 AM

Craig,

Thanks, I somehow missed that.

Zedguy · 7th November 2008, 10:18 PM

My tech is getting 17 volts on the inputs and other issues with my MK4. Does anyone know where I can find a service manual?

llwhtt · 8th November 2008, 12:24 AM

17 volts on the input of what, the amp, the output tubes, need more info. A Mark IV manual can be found on the Dynaco Doctor site. For the mod you're probably going have to settle for the schematic or contact Triode directly.

Craig

24th October 2008, 12:41 AM	#1
Zedguy diyAudio Member Join Date: Jan 2004 Location: Ontario	Anyone Have Info On Triode Board For MK IV? Hey guys, I just purchased a pair of Dynaco MK IV that have the Triode Electronics board (with the dual 12AU7). They are not working properly and unfortunately the person I bought them from gave me no info on the Triode boards, bias pots etc. Anyone have any info they can send me on this? Many thanks in advance.

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24th October 2008, 01:32 AM	#2
llwhtt diyAudio Member Join Date: Jun 2008	There's a schematic of the circuit on Triode Electronics website, in the Dynaco boards section. Craig

24th October 2008, 01:35 AM	#3
llwhtt diyAudio Member Join Date: Jun 2008	It's under the "more info and schematics" sub title. Craig

24th October 2008, 01:43 AM	#4
Zedguy diyAudio Member Join Date: Jan 2004 Location: Ontario	Craig, Thanks, I somehow missed that.

7th November 2008, 10:18 PM	#5
Zedguy diyAudio Member Join Date: Jan 2004 Location: Ontario	My tech is getting 17 volts on the inputs and other issues with my MK4. Does anyone know where I can find a service manual?

8th November 2008, 12:24 AM	#6
llwhtt diyAudio Member Join Date: Jun 2008	17 volts on the input of what, the amp, the output tubes, need more info. A Mark IV manual can be found on the Dynaco Doctor site. For the mod you're probably going have to settle for the schematic or contact Triode directly. Craig

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