Hi I working on Sony KE-42M1 plasma tv.When tv is on the picture did not
appear but after 2-3 seconds the symphtoms looks like picture wash out
the screen from black to real picture but still picture looks pretty
dark(don't see any colors).If I send 7 bar colors signal all of them is
black.I changed the BP board which is make the video but problem still
exist.My thoughts that it could be Y-board because the power supply is
ok(checked all voltages output)or screen itself.Is anybody had the
similar problem with this model?Any help will be appreciate.Thank you

The only way to fix these TV's is by board swapping. Component level
service is not supported. Refer to the service manual for any
necessary setups that may be required after board swaps.


Jerry G.
======


On Nov 20, 1:53 pm, Max wrote:
Hi I working on Sony KE-42M1 plasma tv.When tv is on the picture did not
appear but after 2-3 seconds the symphtoms looks like picture wash out
the screen from black to real picture but still picture looks pretty
dark(don't see any colors).If I send 7 bar colors signal all of them is
black.I changed the BP board which is make the video but problem still
exist.My thoughts that it could be Y-board because the power supply is
ok(checked all voltages output)or screen itself.Is anybody had the
similar problem with this model?Any help will be appreciate.Thank you

"Jerry G." wrote in message
...
The only way to fix these TV's is by board swapping. Component level
service is not supported. Refer to the service manual for any
necessary setups that may be required after board swaps.



While most servicing is done that way, it's certainly not the "only" way to
do it. I've heard quite a few reports right here in this group of people
doing component level service on flat panel sets.

While most servicing is done that way, it's certainly not the "only" way to
do it. I've heard quite a few reports right here in this group of people
doing component level service on flat panel sets.


Bang on ! I may take 15 days to fix an lcd or plasma but i'm doing it
component level.
Some of the faults i've seen:
100k chip resistors that measure 100 k with a meter but measure lower
in circuit when powered up causing SOS ...power trip.
Broken track from one controller going to another , that too mid layer
in the pcb.
Dry electolytics , thats a normal one.
Busted MOSFETS
Defective panel blowing precious panel driver ics and a hole in my
wallet
Bad optocouplers in PS
etc ......
I love the fact that most authorised service centres are strictly
prohibitted from carrying out chip level repairs. Gives us a
competitive edge. Better pricing and quicker delivery. They have to
wait 6 weeks for those boards.

"jango2" wrote in message
...
While most servicing is done that way, it's certainly not the "only" way
to
do it. I've heard quite a few reports right here in this group of people
doing component level service on flat panel sets.

Bang on ! I may take 15 days to fix an lcd or plasma but i'm doing it
component level.
Some of the faults i've seen:
100k chip resistors that measure 100 k with a meter but measure
lower in circuit when powered up causing SOS ...power trip.
Broken track from one controller going to another , that too mid
layer in the pcb.
Dry electrolytics , thats a normal one.
Busted MOSFETS
Defective panel blowing precious panel driver ics and a hole
in my wallet
Bad optocouplers in PS

I love the fact that most authorised service centres are strictly
prohibitted from carrying out chip level repairs. Gives us a
competitive edge. Better pricing and quicker delivery. They have
to wait 6 weeks for those boards.

I admire someone with the patience to track down these problems to the
component level. I enjoy servicing equipment, but I don't have quite that
much patience.

"William Sommerwerck" wrote in message
...
"jango2" wrote in message
...
While most servicing is done that way, it's certainly not the "only" way
to
do it. I've heard quite a few reports right here in this group of people
doing component level service on flat panel sets.

Bang on ! I may take 15 days to fix an lcd or plasma but i'm doing it
component level.
Some of the faults i've seen:
100k chip resistors that measure 100 k with a meter but measure
lower in circuit when powered up causing SOS ...power trip.
Broken track from one controller going to another , that too mid
layer in the pcb.
Dry electrolytics , thats a normal one.
Busted MOSFETS
Defective panel blowing precious panel driver ics and a hole
in my wallet
Bad optocouplers in PS

I love the fact that most authorised service centres are strictly
prohibitted from carrying out chip level repairs. Gives us a
competitive edge. Better pricing and quicker delivery. They have
to wait 6 weeks for those boards.

I admire someone with the patience to track down these problems to the
component level. I enjoy servicing equipment, but I don't have quite that
much patience.


We most often get the boards the next day. We're a Sony SES warranty center,
and they really get those things out fast. 2nd day air is standard shipping,
but since we're only about 200 miles from Kansas City we still usually get
them the next day, at no charge for freight.
Out-of warranty repairs will be a problem down the road however.

The rush-rush nature of warranty repairs means we wouldn't have time for
component-level troubleshooting of plasma or lcd in most cases. We're
required to get those things done fast. Even extended warranty companies
are really pressing us on the time issues. Sometimes it is necessary to
order all the boards and return the ones that didn't fix it. Panels take
longer though, since they come by freight carrier and not DHL or UPS.

Still mostly component level for audio repairs however...

Mark Z.

Mark D. Zacharias wrote:
"William Sommerwerck" wrote in message
...
"jango2" wrote in message
...
While most servicing is done that way, it's certainly not the "only" way
to
do it. I've heard quite a few reports right here in this group of people
doing component level service on flat panel sets.
Bang on ! I may take 15 days to fix an lcd or plasma but i'm doing it
component level.
Some of the faults i've seen:
100k chip resistors that measure 100 k with a meter but measure
lower in circuit when powered up causing SOS ...power trip.
Broken track from one controller going to another , that too mid
layer in the pcb.
Dry electrolytics , thats a normal one.
Busted MOSFETS
Defective panel blowing precious panel driver ics and a hole
in my wallet
Bad optocouplers in PS
I love the fact that most authorised service centres are strictly
prohibitted from carrying out chip level repairs. Gives us a
competitive edge. Better pricing and quicker delivery. They have
to wait 6 weeks for those boards.
I admire someone with the patience to track down these problems to the
component level. I enjoy servicing equipment, but I don't have quite that
much patience.


We most often get the boards the next day. We're a Sony SES warranty center,
and they really get those things out fast. 2nd day air is standard shipping,
but since we're only about 200 miles from Kansas City we still usually get
them the next day, at no charge for freight.
Out-of warranty repairs will be a problem down the road however.

The rush-rush nature of warranty repairs means we wouldn't have time for
component-level troubleshooting of plasma or lcd in most cases. We're
required to get those things done fast. Even extended warranty companies
are really pressing us on the time issues. Sometimes it is necessary to
order all the boards and return the ones that didn't fix it. Panels take
longer though, since they come by freight carrier and not DHL or UPS.

Still mostly component level for audio repairs however...

Mark Z.


usually in plasmas I do the same swapping the boards.this is actually
the fastest way to fix but what happen if I bought the board paid money
but this is the wrong board because the tv doing the same?thats headache
and waste of time for me and for client.Anyways is anybody seen the same
problem in sony like mine?thanks