DIY Audio Projects Forum
 NEW  Matt presents bias and operation data for the 6V6 tube in SE operation - 6V6 Single-Ended (SE) Ultra Linear (UL) Bias Optimization.

DIY Audio Projects Forum

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It is currently 27 Oct 2020, 13:13

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PostPosted: 15 Jan 2020, 03:07 

Joined: 28 Oct 2019, 04:54
Posts: 3
Hello, i have couple of Shuguang 2a3c.
I have some problems with both of them. The filament does not light. I have 2.47 Vdc and 4 A at the transformer.
It only heating slowly. I check the filaments continuity and it ok.
What could be wrong!?

PostPosted: 19 Jan 2020, 06:06 

Joined: 13 Jan 2018, 21:33
Posts: 353
Location: australia
are you in a position to post your circuit you have used and some pics with detail. someone may be able to spot the problem. cheers


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