Sorry if this is a dupe - my IP went nuts right as I hit "send" a minute
ago.
Gang,
I recently installed the InRad IF mod and key click mod in my
post-Afganistan-deployment-tax-refund Mk V Field FT-1000 MP gift to myself,
and screwed it up with a solder bridge - nothing against George and crew,
entirely my fault. On testing (before I found said bridge), I did indeed let
the smoke out, and I need to get it back in.
The bridge was on the IF board, across C2148 where the added capacitor and
resistor pair are installed. And unfortunately no, I cannot in good
concience report absolutely that I did not screw up something else....
On key down, I literally "popped" a smd resistor off the power regulator
board (one of the R9019-9020-9021-9022 set), and heated them up pretty
severly, nearly blistering the pcb. On further testing after repairing that,
everything seems to work properly - except for having NO power output.
The rig will key up, all functions as far as I can tell work fine, the
receiver works great. Zero power out. Nothing on the VCC meter, nothing on
the Vectronics pwr meter.
I have reset the CPU and removed the added parts, but still no joy. I have
read all available help files on the VA3CR web site, and all other info I
have found without luck.
InRad suggested I look at the IF board, and indeed I see what looks like a
few warmed up parts, but before I send it off to Yaesu - California from
North Carolina - I wanted to take a shot at finding help here.
Can anybody help me with some troubleshooting? I can - well, usually - use a
soldering iron and a VOM, but knowing just how to check the various bits,
and what their values should be, is still above my current ability. I have
only the schematic which came with the radio, not the service manual, and no
test equipment other than a VOM. Is there any chance I can figure this out
on my own?
Does anybody know what an IF board costs from Yaesu? Anybody have an "extra"
one sitting around?
Thanks in advance,
Brad
K0BHC
Sergeant First Class, Infantry
82d Airborne Division
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