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Old 5th March 2013, 05:17 PM   #1481
Zen Mod is offline Zen Mod  Serbia
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Quote:
Originally Posted by zoe View Post
1.......
If this is not clear let me know and I'll elaborate.
huh

disconnect all wires

then :

+ side from first bridge connect to point marked XX
- side from first bridge connect to point F
- side from second bridge connect to point XX
+ side from second bridge connect to point L

+ input to first choke goes from point M
- input to second choke goes from point x

fat bridge from point XX to point 15+z

output end of first choke goes to point W
output end of second choke goes to point s

positive rail to both amp pcbs from point q
negative rail to both amp pcbs from point c
gnd rail to both amp pcbs from point 15+z
NTC to chassis from point 15+z

connect fat wire bridge between two main gnd points on channel's pcbs (left ch. pcb gnd pad - fat wire - right ch. pcb gnd pad )

each speaker gnd goes from own channels pcb gnd point

each RCA gnd goes to own channels pcb gnd point
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Last edited by Zen Mod; 5th March 2013 at 05:29 PM.
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Old 5th March 2013, 09:48 PM   #1482
WalterW is offline WalterW  Netherlands
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Respect, for figuring that out....
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Old 5th March 2013, 09:58 PM   #1483
Zen Mod is offline Zen Mod  Serbia
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nuttin' without proper candies

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Old 5th March 2013, 10:30 PM   #1484
a.wayne is offline a.wayne  United States
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are we there yet .....?
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Old 5th March 2013, 10:38 PM   #1485
6L6 is offline 6L6  United States
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Well, we are one step closer, I put the source diodes back in the circuit and it's still stable. I have not had a chance to get it nice and hot at full bias, I had to go pick up my toddler (well, whatever 3 1/2 is) , and he's down for a nap

Again, we need separate verification that all is good. But things are looking very hopeful.
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Old 5th March 2013, 10:51 PM   #1486
a.wayne is offline a.wayne  United States
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Sounds Good, now to wake up Buzz .........
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Old 5th March 2013, 11:17 PM   #1487
Variac is offline Variac  United States
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Papa warns on the F-5 that the inputs and outputs need to be well separated. Is it possible that your wiring or the board traces are in too close proximity?
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Old 6th March 2013, 01:45 AM   #1488
nrg2009 is offline nrg2009  United States
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mighty ZM did it again, great job.

Great job to everyone. We are very close, the last moments are the toughest.
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Old 6th March 2013, 02:33 AM   #1489
6L6 is offline 6L6  United States
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Quote:
Originally Posted by Variac View Post
Papa warns on the F-5 that the inputs and outputs need to be well separated. Is it possible that your wiring or the board traces are in too close proximity?
Hmmm... I have no idea. But with the seperate output boards the outputs seem kinda far, so to speak. I would guess (and it's a guess, nothing more) that the wiring between the FE board and the output board could be more of a problem.

See if Papa can take a glance at the PCBs, he might have some insights.
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Old 6th March 2013, 08:56 AM   #1490
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Goy one channel biased last night. No apparent issue. Will try the other tonight, then ill check for problems. Jim, what scope do you have?
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