I know this is a dumb question, but what's the source of the +REG?
73, Barry N1EU
On Sat, Dec 17, 2011 at 10:41 AM, Bryan Lee Cornwell
<k2blc@embarqmail.com> wrote:
> Hello All
>
> Upon turning on a Omni VI 563 Opt. 3 , I let some smoke out of the box.
> U1 on the Xtal Osc-LO board had failed and took out the trace on the
> board at pin 12. I removed the IC and replaced with a socket and new IC.
> Rig is still completely dead with the exeption of the NOTCH and ATTN
> led's (when buttons pushed).
>
> I also found the 7805 for the logic board 5.0V had failed. That has been
> replaced and I now have 5V to the locic boards. All my 13.8 V (red
> wires) seem to be OK with the proper voltage. The + REG voltage (orange
> wires) is only 1.6 Volts at all connectors....
> should be 8.5V. I have 13.6,13.7, and 13.9 at Q19 on low level driver
> board, Does that seem right ?
>
> Symptoms are No lights...No display...nothing but the above mentioned. I
> tried reset using both CLEAR and ENTER buttons with turning power on
> ....nothing.
>
> Is there any published data on typical voltages at the pins of the
> various IC's? I checked the reflector arcives and couldn't find anything.
>
> I haven't call Ten-Tec yet and was hoping I could learn a bit by trouble
> shooting this myself...but I may be in over my head.
> Any ideas????
>
> --
> Bryan Lee Cornwell
>
> k2blc@embarqmail.com
>
> http://k2blcspace.embarqspace.com/
>
>
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