[R-390] R-390A intermittent loss of Diode Load voltage

[Larry H]

Jordan, I think Jacques has hit the nail on the head.  I have found wiring
issues inside the connector cover, before.  Might be worth while to inspect
it.

Regards, Larry

On Thu, Feb 17, 2022 at 10:33 AM Jacques Fortin <jacques.f at videotron.ca>
wrote:

> Hi Jordan,
>
> If the symptoms you report are exact (No change in Carrier Level and AGC,
> IF
> and audio deck swap making no change) it have to be in the wiring between
> P112-5 and P112-3.
> If a front panel Diode Load test socket was previously fitted on this set
> and removed, check if any wire connected to TB-103-14 remains which can get
> short to the chassis at the front panel side.
> You can also try to bypass J512-5 to J-512-3 inside the IF module itself to
> check if the intermittent disappears, if so, the problem is definitely
> within the wiring going to the P112 pins to the TB-103 and back.
>
> And no, this cannot came from anything in the RF or the Xtal Osc decks.
>
> 73, Jacques, VE2JFE in Montreal
>
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