[Elecraft] Fw: No power, No audio

[Tom Buchanan]

I sent an email to the reflector Wednesday but it didn't appear so trying
again.

Tom

----- Original Message -----
From: "Tom Buchanan" <tlbuch@scrtc.com>
To: <elecraft@mailman.qth.net>
Sent: Wednesday, November 13, 2002 11:25 PM
Subject: No power, No audio


> Hello to the Elecraft Group,
>
> I am working on the Alignment & Test Part 2.  I have been reading
countless
> emails in the archives on the elecraft website and did the "Cheap 'N
Dirty"
> signal tracing except I used a Heathkit IG-102 Signal Generator over the
> past week trying to find the problem.  The 13 test points checked out
okay.
>
> With my Heathkit T-4 Signal Tracer I have been able to listen on the RF
> board to U11 (Tx Mixer/product detector) pins 4 & 8 to cw on 40 meters, so
> it does receive.  I have no audio.  I did get the 080 info message one
time
> and went through the reset.  The display is all zeros, the voltmeter quit
> working and the Lo Batt message pops up periodically although I have it on
a
> power supply.  The voltage very rarely drops below 5 volts when switching
> with the relays.  Doing some voltage checks I found that 3 pins on U8
> (quad), U6 (MCU), & U7 (EEPROM) should be 5 volts but are zero and a pin
> each on U8 & U7 should be zero volts but is 5 volts.
>
> Not sure what is going on here...any ideas?
>
> Thanks,
>
> Tom KG4KGY
> K2 #2688
>