[TechAssist] Re: Update: Panasonic PVM939 combi, chassis KM99Vdead (sort of)
- From: John at Main TV <maintv@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Thu, 21 Aug 2003 10:39:31 -0600
Hello. Thanks for your suggestion. That could easily be the problem
but it is hard to tell without a schematic. The DC power cord has 3 pin
plus a shield and the third pin does make a connection to the circuit
but I could not trace it out. Were you working on this same model? It
is also similar to PV-C921. Thanks again, John.
Edvin E Weickum wrote:
> Hello,
>
> Not sure if this will help but I worked on a AC/DC Combi with simular
> problem and it turned out to be the power pulg connctor. It had an
> internal switch in it that informed the unit as to AC or DC operations.
> You might check that.
>
> Hope that was of some help. Didn't see your earler post's.
>
> Good luck,
>
> Ed..
> CET, K7NJD
> Jim West Tv Service
> Oregon City,Oregon
>
>
>
> On Tue, 19 Aug 2003 14:28:56 -0600 John at Main TV <maintv@xxxxxxxxxxx>
> writes:
>
>>I am still working on this combi Panasonic PVM939 (chassis KM99V) 9"
>>AC/DC made in 1999. It has the seperate power supply across the
>>back.
>>It came in dead but I found that if I MOMENTARILY short the contacts
>>of
>>the relay RL1001 on the PS board it will work on AC or DC until I
>>unplug
>>it. When I do unplug it, it will not start again by itself. I do
>>not
>>have a service manual for this. Can someone tell me what contols
>>this
>>relay or can someone send a schematic of the power supply. I need
>>to
>>have this finished by the weekend. Thanks, John.
>>--
>>John Mielke
>>Main TV
>>Longmont,Co 80501
>>303 776 6955
>>303 776 0792 fax
>>maintv@xxxxxxxxxxx
>>
>>
>>
>
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John Mielke
Main TV
Longmont,Co 80501
303 776 6955
303 776 0792 fax
maintv@xxxxxxxxxxx
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