Do you know just what failed on the I/O board? Was it possibly due
to static discharge?
I tend to leave an antenna connected, except during active weather,
but curious if there is something sensitive in the P3 I/O area that
can fail easily from a surge, like the old RS-232 circuitry in the
original K3.
Thanks,
-- Dave, N8SBE
Quoting Howard Saxion via Elecraft <[email protected]>:
I had a similar problem with my P3 with SVGA. I had to cycle
through the on-off switch a few times before it would fully power
up. Once powered up, everything was working and stable. I tried
reseating the ribbon cables but that had no effect.
I contacted Elecraft technical support and they had me try a few
things but that did not solve the problem. I sent it to Elecraft and
it turned out that the I/O board was faulty. The repair cost was
approximately $200 for a new board and labor.
73
Howard/WX7HS
On Apr 12, 2021, at 06:05, Dave Cole <[email protected]> wrote:
Rick,
Thank you! I appreciate the datapoint in this. I was just looking
over the schematic and came to the same conclusion... It looks
like a backlight problem to me as well... I tried to find a
datasheet on teh 4538 IC that appears to control it, but alas,
nope. I got mine to come back on by power cycling it as well...
Hopefully someone has actually fixed this, and knows which cap...
73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources
On 4/12/21 5:27 AM, Rick Stanback wrote:
My P3 does the same thing. If i keep cycling power it eventually comes
on and works. I suspect there is a bad capacitor in the LCD backlight
power. I have not actually looking into it yet.
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