In Reply to: Do you have a volt meter? posted by gusser on March 4, 2012 at 18:38:02:
Yeah I have a multimeter,
Both the 12AX7's and 6SN7 have 6.3vac, The 6550's have 7.3vac before the R68 resisters.
With the 12ax7's and 6SN7 using center tap after the choke in the HV rail, the heaters for the 6550 have the low side grounded in the schematic. What would cause either 6550's to power? This is why I tried with no ground.
Very good questions guys, thanks. I am having troube uploading the schematic. I have apple computers so I will try with my other one later.
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- yes I have a multimeter - frankford 19:15:37 03/04/12 (24)
- RE: yes I have a multimeter - TimFox 10:21:41 03/05/12 (0)
- RE: yes I have a multimeter - Ron Oehlert 08:23:48 03/05/12 (0)
- schematic - frankford 00:39:11 03/05/12 (21)
- OK.... - gusser 13:36:50 03/05/12 (20)
- 12ax7 - wheezer 17:50:24 03/05/12 (0)
- RE: OK.... - frankford 14:55:40 03/05/12 (18)
- RE: OK.... - gusser 15:12:36 03/05/12 (17)
- RE: OK.... - frankford 15:23:54 03/05/12 (16)
- Can you post a picture if the underside? - gusser 15:39:14 03/05/12 (15)
- RE: Can you post a picture if the underside? - frankford 17:20:52 03/05/12 (14)
- another pic - frankford 17:22:57 03/05/12 (13)
- Update on amp - frankford 15:05:07 04/07/12 (1)
- I'm done with it. - frankford 17:11:54 04/07/12 (0)
- RE: another pic - gusser 18:25:01 03/05/12 (1)
- Flux Removal - gusser 13:35:59 03/06/12 (0)
- RE: another pic - Tre' 17:39:07 03/05/12 (8)
- RE: another pic - frankford 17:47:07 03/05/12 (7)
- RE: another pic - Tre' 17:48:54 03/05/12 (6)
- quick question Tre' - frankford 18:06:27 03/05/12 (4)
- RE: quick question Tre' - Tre' 18:25:20 03/05/12 (3)
- RE: quick question Tre' - frankford 21:57:12 03/05/12 (2)
- RE: quick question Tre' - frankford 23:05:40 03/05/12 (1)
- RE: quick question Tre' - frankford 08:56:14 03/06/12 (0)
- RE: another pic - frankford 18:02:34 03/05/12 (0)