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?

Bad tac switches ( contaminated ) or Micro ..


.."Arnold Stewart" wrote in message
. ..
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?

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
- - - - - - - - -


"Arnold Stewart" wrote in message
. ..
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?

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.

wrote:
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.

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.

kip wrote:

Bad tac switches ( contaminated ) or Micro ..



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?)

They don't have to be used to get contaminated.


"Arnold Stewart" wrote in message
...
kip wrote:

Bad tac switches ( contaminated ) or Micro ..



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?)

On Fri, 6 Jan 2006 13:23:16 -0500, "kip" wrote:

They don't have to be used to get contaminated.


"Arnold Stewart" wrote in message
m...
kip wrote:

Bad tac switches ( contaminated ) or Micro ..



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?)

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