Bottlehead Forum

Bottlehead Kits => Crack => Topic started by: kryptic4l on October 28, 2018, 08:22:14 AM

Title: voltage checks [resolved]
Post by: kryptic4l on October 28, 2018, 08:22:14 AM

am i chasing down  a non exsistent issue,   just installing my speed ball, and my voltages are

54 V     pin one seems a bit low,   could this be tube related ? i just replaced the big one, since i smashed the stock one.  its an older genelux 6as7
170 V
0 mV
170 V
76 V

Title: Re: voltage checks
Post by: kryptic4l on October 28, 2018, 08:24:53 AM

also i am curious , does pin 1 feed through to pin 2 or does pin 2 provide the power to pin 1

Title: Re: voltage checks
Post by: Paul Birkeland on October 28, 2018, 09:21:38 AM

Is this on the large board or the small board?  Where do you get 54V?  For example, is that 54V on OA of the small board? Or is that 54V on G of the big board? 

Title: Re: voltage checks
Post by: kryptic4l on October 28, 2018, 09:48:04 AM

not to the big board yet, 54 is on the 0a of the small board

Title: Re: voltage checks
Post by: Paul Birkeland on October 28, 2018, 10:41:45 AM

The last 3 times I have seen this problem, a PN2907 has been installed backwards.

Title: Re: voltage checks
Post by: kryptic4l on October 28, 2018, 11:25:27 AM

bingo, thanks so much