07-30-2013, 11:13 AM
Started working my way through it last night. Nothing yet. I replaced all the tubes one at a time and no change. Still looking.
EDIT: I put the signal generator on it and found that (on the Chuck Schwark Philco 46-480 paperwork) R308 1K 1/2 watt was fried. Buried under a mica cap. So through the process of elimination I narrowed it down to a problem in the RF section of this radio. If you've ever taken the bandswitch out of a 46-480 you know it's not fun.
I checked every component I could get to and all looks good but there's a ton of stuff buried in there that you just cant get to without disassembling the whole RF section. This will be the 2nd time I've done one on a 46-480. 1st time was when I built this set in 2009. And I wouldn't have taken it apart then but I could visibly see fried caps and resistors buried in there.
So the fun begins.
Johnny
EDIT: I put the signal generator on it and found that (on the Chuck Schwark Philco 46-480 paperwork) R308 1K 1/2 watt was fried. Buried under a mica cap. So through the process of elimination I narrowed it down to a problem in the RF section of this radio. If you've ever taken the bandswitch out of a 46-480 you know it's not fun.
I checked every component I could get to and all looks good but there's a ton of stuff buried in there that you just cant get to without disassembling the whole RF section. This will be the 2nd time I've done one on a 46-480. 1st time was when I built this set in 2009. And I wouldn't have taken it apart then but I could visibly see fried caps and resistors buried in there.
So the fun begins.
Johnny
"It's Nice To Be Nice To The Nice"
Major Frank Burns Mash 4077th
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