Please help with my first build 5F1 with no sound

[icy_wind500]

ok changing now

[tubeswell]

But also might pay to check the OT and the back of the main board like I said. (And take care with your working hours)

[telenut62]

B+ will be over 400V...this'll be interesting

[icy_wind500]

green ( 6.84V)
yellow (5.02V)
red (655V)

[icy_wind500]

But also might pay to check the OT and the back of the main board like I said. (And take care with your working hours)

So now that the PT looks right, I guess the only problem is under the board or OT.....
otherwise I have a $300 paper weight ....

[telenut62]

Always a process of elimination, try the OT test when your fresh and clear of mind.

[icy_wind500]

should I try OT first or pull the board first

[telenut62]

You've checked the board? Try the OT...but be very careful.

[icy_wind500]

I'm not sure what color is what .... I have red blue which are primary and black green which is secondary right ?

[telenut62]

This is your OT?...Transformer, Output, 8 W, Single Ended | Antique Electronic Supply LLC

[icy_wind500]

yes !

[telenut62]

Ah the link didn't come up....go to post #86 at TDPRI there is a link to a schematic to confirm the primary/secondaries

[icy_wind500]

Ah the link didn't come up....go to post #86 at TDPRI there is a link to a schematic to confirm the primary/secondaries

ok I think we found the problem....


Its only 1.2V across the primary....

[telenut62]

Well well....it's a 5K OT? but I think it should read higher than that, get on to the supplier show them what you've found and get a refund or a replacement.

[icy_wind500]

I've just emailed Dave !

Oh what a relieve