Re: Zenith Television

Common failure was one of the main supply diodes in the SMPS, usually the
area of the pcb around the diode will be discoloured and the solder
connections appear burnt or charred. This will include other components
associated with that particular circuit.
"Chris Dawley" <tvtech@xxxxxxxxxxx> wrote in message
news:W0Rhe.27182$eJ4.16812@xxxxxxxxxxxxxxxxxxxxxxxxx
> Had a chance this weekend to take the wire out and check out the main
> board. Checked for cold soldier joints but didn't find any. Checked
> diodes but couldn't find any bad ones as well. What else could it be?
> The set has no video or sound. Any information would be helpful.
> "Art" <plotsligt@xxxxxxxxxxx> wrote in message
> news:ZN-dnQEc4oJWqh7fRVn-1A@xxxxxxxxxxxxxx
>> Any charge has long since been disappeared, just take the HV lead our of
>> the splitter.
>> "Chris Dawley" <tvtech@xxxxxxxxxxx> wrote in message
>> news:hByge.20213$yq3.16508@xxxxxxxxxxxxxxxxxxxxxxxxx
>>>I have a Zenith PVY4665DT Television that I am trying to fix. The tv has
>>>no video or sound. I am unable to get a schematic or service manual.
>>>The TV has been sitting up for about a year. I tried to remove the main
>>>module but the flyback wire is in the way. I am leery about removing the
>>>wire because of the voltage stored in the flyback. If the TV has been
>>>sitting up for that long, is the voltage slowly leaking out or is it
>>>stored in the transformer?
>>>
>>
>>
>
>


.

Relevant Pages

  • Re: School project question
    ... >using LED's stuck through a foam board, ... surrounded by other diodes representing electrons. ... >plans to stick the wire leads of the diodes directly into the ... You can buy a soldering iron ...
    (sci.electronics.design)
  • Re: CB650 charging issue
    ... You should be able to read from the black wire to the white wire, ... Any of the three coils in the stator would produce about 60 volts, ... The fact that you get a reading from any yellow wire to any other ... There are six power diodes inside the rectifier regulator and the ...
    (rec.motorcycles.tech)
  • Re: Mast wiring
    ... Basic method: You need two diodes. ... Connect both diodes to wire A. They should go in opposite directions, ... Connect the other ends of the two bulbs to wire B. ... Also connect wire A to the moving contact of the switch in the relay. ...
    (uk.rec.sailing)
  • Re: Ok...so how did I fix this
    ... sometimes it would do a kind of jitter flip and ... Then I jiggled the diodes and they seemed fine. ... Then I checked the diodes with my meter and found the one from ground ... and melted out the solder to pull off the wire ...
    (rec.games.pinball)
  • Re: Wiring driving lights to come on with highbeams
    ... to wire them to come on with my highbeams. ... happened is that you have spliced into the highbeam B+ wire that goes ... diodes for about $3. ... on both sides of that splice, ...
    (rec.autos.tech)