Just got this in yesterday (dont have the model number on hand as I am
away from it at the moment.) Its about a year old, flat crt and yes
basically chinese junk. However it fits perfectly in the hole in the
wall at home.

Problem: When you turn it on, a thick white raster in the middle of the
screen flashes on and off at about 2 times per second nothing else is
on screen, can hear eht come in and out with the flashing. After a few
minutes the raster will litterally grow as you watch it and start
flashing faster.

After 6-7 minutes it will come straight on like normal except the
picture at the bottom is scrunched up 1/3 of the screen and will
gradually grow down until a full normal picture is displayed.

Once running it will run flawlessly.

Now I do more work on dvd players and audio equpment and rarely look at
a television's, I got this with a whole lot of gear yesterday for $20,
no surprise it wont work perfectly but when its warmed up the picture
is damn good.

When I get home I will try heating the powersupply/hv section with a
hairdryer. Already gone over it for bulgy caps and cold solder but came
up without much writing home about.

Has anyone got some tips that I should try on here?

Joe.

Check for a temperature sensitive parts in the vertical deflection area. As
the set warms up, the sensitive part(s) start working, but naturally never
to proper specs.

You can probably troubleshoot for this with a heat gun and a few cans of
freeze spray. Once you locate the defective parts, you can then buy
replacements. You can test the components by heating and cooling them to
weed out the sensitive ones. Don't be surprised if you find a fair number of
bad capacitors this way.

If you are not used to TV servicing, this can be difficult, and is not safe
for you to try. It may be a better option to send out the set to an
experienced service tech who works on TV sets.

--

JANA
_____


"toranaboy14" wrote in message
ps.com...
Just got this in yesterday (dont have the model number on hand as I am
away from it at the moment.) Its about a year old, flat crt and yes
basically chinese junk. However it fits perfectly in the hole in the
wall at home.

Problem: When you turn it on, a thick white raster in the middle of the
screen flashes on and off at about 2 times per second nothing else is
on screen, can hear eht come in and out with the flashing. After a few
minutes the raster will litterally grow as you watch it and start
flashing faster.

After 6-7 minutes it will come straight on like normal except the
picture at the bottom is scrunched up 1/3 of the screen and will
gradually grow down until a full normal picture is displayed.

Once running it will run flawlessly.

Now I do more work on dvd players and audio equpment and rarely look at
a television's, I got this with a whole lot of gear yesterday for $20,
no surprise it wont work perfectly but when its warmed up the picture
is damn good.

When I get home I will try heating the powersupply/hv section with a
hairdryer. Already gone over it for bulgy caps and cold solder but came
up without much writing home about.

Has anyone got some tips that I should try on here?

Joe.

Im reasonably comfortable with working on televisions, just havent done
a lot of it. last time I worked on one I had two of them to get one
going, one had a burnt tube (TAB screen) and the other didnt do
anything. swapped the main pcb, tidied up some dry solder, all good.

The freezer spray, I have heard of this but never used. Is it
conductive? Corrosive? any major negative effects?

I will try the heat gun tonight to get me in the right general area of
the set. It looks like it has been worked on before, Traces on the
transformer in the power supply section have been cut and soldered up
again.

Joe.


JANA wrote:
Check for a temperature sensitive parts in the vertical deflection area. As
the set warms up, the sensitive part(s) start working, but naturally never
to proper specs.

You can probably troubleshoot for this with a heat gun and a few cans of
freeze spray. Once you locate the defective parts, you can then buy
replacements. You can test the components by heating and cooling them to
weed out the sensitive ones. Don't be surprised if you find a fair number of
bad capacitors this way.

If you are not used to TV servicing, this can be difficult, and is not safe
for you to try. It may be a better option to send out the set to an
experienced service tech who works on TV sets.

--

JANA
_____


"toranaboy14" wrote in message
ps.com...
Just got this in yesterday (dont have the model number on hand as I am
away from it at the moment.) Its about a year old, flat crt and yes
basically chinese junk. However it fits perfectly in the hole in the
wall at home.

Problem: When you turn it on, a thick white raster in the middle of the
screen flashes on and off at about 2 times per second nothing else is
on screen, can hear eht come in and out with the flashing. After a few
minutes the raster will litterally grow as you watch it and start
flashing faster.

After 6-7 minutes it will come straight on like normal except the
picture at the bottom is scrunched up 1/3 of the screen and will
gradually grow down until a full normal picture is displayed.

Once running it will run flawlessly.

Now I do more work on dvd players and audio equpment and rarely look at
a television's, I got this with a whole lot of gear yesterday for $20,
no surprise it wont work perfectly but when its warmed up the picture
is damn good.

When I get home I will try heating the powersupply/hv section with a
hairdryer. Already gone over it for bulgy caps and cold solder but came
up without much writing home about.

Has anyone got some tips that I should try on here?

Joe.

well...

Found a few potentialy dried out electro's there is a whole row of them
up against the HOT's heatsink, one is against the HOT itself I will
replace the ones that aren't measuring up to standard and try again.

j.