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Max volume RCA T.V. CTC 187CJ3

Discussion in 'Electronic Repair' started by Arnold Stewart, Jan 5, 2006.

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  1. RCA TV F32672SB CTC 187CJ3
    TV functions normally for days then the volume goes to maximum & no more
    control with the remote or buttons. Reprogrammed the EEPROM, checked &
    soldered the tuner. TV worked O.K. on the bench for one week. Brought
    the TV to the customer. Worked for three days, same problem. Told him to
    disconnect TV for a while and re-connect. He said he would call me to
    give results. He didn't call back, now a week since, but I suspect he
    will. Ever have this problem?
     
  2. kip

    kip Guest

    Bad tac switches ( contaminated ) or Micro ..
     
  3. sofie

    sofie Guest

    the obvious simple thing to look for if it comes back is contamination,
    moisture, corrosion, etc on the front panel volume control buttons... or
    even bad solder joints around that area. Also have the customer take the
    batteries out of the remote control for a few days to make certain that it
    is not the remote causing the problem.
    electricitym
    - - - - - - - - -
     
  4. Guest

    This may seem like a dumb question, but you did have the customers
    remote controls (all of them) for testing along with the tv set, didn't
    you?

    Aside from the obvious occasional liquid corrosion of the front panel
    switches, the most common cause of a failure like this that I have seen
    is worn out remote controls. Problem is most customers only bring in
    the tv set, not the complete package with all the remote controls they
    have programmed for the tv set.
     
  5. The TV set was not accompanied with the remote, but after a couple of
    days on the bench the set acted up. I was using my own universal remote.
     
  6. Bad tac switches is a very probable cause, even though the customer has
    stated that he has never used them. Always used the remote. (However,I
    never asked him how much Windex he used to clean the CRT?)
     
  7. kip

    kip Guest

    They don't have to be used to get contaminated.
     
  8. Jason D.

    Jason D. Guest

    Like Kip said, there is many ways to bollix up a tact switches, also
    heavy smokers do this nicely. I did several this way.

    Cheers, Wizard
     
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