[TenTec] OMNI VI DC power PC board failure ?

[Wade Staggs]

The standard repair for the problem with this PSU Board, is to replace
ALL of the Capacitors on that board.
                                        73,  Wade/KJ4WS

On 12/1/16, Steve Ellington <steven4lq at gmail.com> wrote:
> Sounds to me like your power supply is bad.
>
> On Thu, Dec 1, 2016 at 9:19 AM, David Perrin <dbperrin at gmail.com> wrote:
>
>> Hi-
>>  I have an OMNI VI that started to fail; the readout began to flash and
>> the
>> relay on the DC power board (about 2.5" square) began buzzing. I replaced
>> the 1000uF cap @ 25V with one of the same cap. but a voltage rating of
>> 50V.
>> That increased the frequency of the buzzing by about twice the frequency.
>> Transistors replaced, a 1N4001 diode replaced as well. 0.15 Ohm resistor
>> is
>> OK. Next will be to replace the 16V Zener.
>>
>> Any clues would be appreciated, or maybe there is a DC power board out
>> there somewhere.
>>
>> Thanks for reading.
>>
>> 73 de Dave in NH  K1OPQ
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