Pioneer big Screen Power probem SIMPLE?

[bunboy]

I have an old big screen Pioneer I have had for years. To get it started
now I have plug and unplug it over and over in the wall till it finally
starts. the longer I go without watching it the longer I have to plug and
unplug it. Sometimes I have to do it for ten minutes to get it working
sometimes just a minute. Almost always related to how long ago the last
time I watched it.
What's wrong with it? Can I fix it myself? IF I am lucky enough to
find an honest person to fix it about how much is it going to cost. It still
gets a decent picture but it's not my main or even second TV . Help please?

 

[Jerry G.]

If you are skilled in TV servicing, and have the necessary tools and
service information to troubleshoot the set, you can service it. This
sounds like a component in either the power supply, HV generator, a scan
amplifier, scan protection, or etc is becoming thermo sensitive. Many
times electrolytic caps can do this type of failure in various areas.
There is probably a number of them that have to be changed, when
considering that the set has a number of years on it.

If you keep using the set this way, the defective component(s) may
infact become completely shorted or opened, thus causing other damage.
This will greatly increase the cost of repairs.

To make it work successfully again, I would suggest you call in an
experienced service person who knows your set very well. There are very
high voltages employed, and there are very strong safety issues at
stake.

--

Greetings,

Jerry Greenberg GLG Technologies GLG
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I have an old big screen Pioneer I have had for years. To get it
started
now I have plug and unplug it over and over in the wall till it finally
starts. the longer I go without watching it the longer I have to plug
and
unplug it. Sometimes I have to do it for ten minutes to get it working
sometimes just a minute. Almost always related to how long ago the last
time I watched it.
What's wrong with it? Can I fix it myself? IF I am lucky enough to
find an honest person to fix it about how much is it going to cost. It
still
gets a decent picture but it's not my main or even second TV . Help
please?

 

[Guest]

I have an additional question. I also have an older 401 Pioneer RPTV.
About 5 years ago I replaced all the P.S. Electroyltics with new high temp
switching power supply caps and reflowed the solder at any points that look
like were potential cold solder joints. My unit powers on fine. My issue
is the the tuner started working intermittently and now does not work at
all. I have the service manual and have not started looking yet. I was
actually first going to look for bad caps. Is this a common issue to look
at, if not I'll just start looking at the tuner voltages. The video inputs
work fine. Also for years the reds are slightly bending to the left on the
right lower quadrant. This has not been enough for me to tear into the
unit. This cannot be corrected by adjusting the convergence pots on the
front board and I also repaired all cold solder joints on that board. Has
anyone ran into this issue?

Thanks in advance for any help

Kurtis
[email protected]

 

[Guest]

Thanks for the input. I'll try the electroyltics in the IF section, I have
a good cap tester.

Kurtis