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capacitor, alot
of times the short will only appear with a load........or overload (current
leakage). The picture tube could also be hitting it's cut
off point due to the insulation materials breaking down inside it. maybe you should try turning down the screen voltage for the blue tube. It's
an adjustment on the focustat block. (a black block with six adjustments, 3 for focus, and 3 for screen voltages. If it's anything like my tv, It
will be behind the speaker grill and be the bottom left adjustment on the block for blue. you might try turning it counter clockwise a quarter
of a turn and see what happens. of course it would throw your color off so you'd be doing some adjusting to get color cal right. I'm not sure
what goes wrong with these tubes but it's not uncommon to get a heater-cathode short. It could also be a failing cap on the video board. a
shorted coupling cap might cause somthing like that. The tv I'm using now is an RCA 52" hi def that had a shorted coupling cap that was
wreaking havoc on the green gun. that was another case of the tv shop telling the customer that it had a bad picture tube so he was going to
through it away. I'm glad I saved it. YaY, free tv for me!!!! anyways thats just my 2 cents, whatever thats worth. I hope it helps. Justin
Justin,
You are my new best friend! Unbelievable! quarter turn counterclockwise on the bottom left knob for blue did it! Now I just need to get the
set into focus. the text is slightly blurred. If anyone has a manual, please forward to me at projects4joe@gmail.com
Larry Dillon on January 8, 2008 12:44 AM
Thats all good my friend, but that is only a temporary fix, and may work for a while, but you will still need to replace the tube in the near
future. What is the model number of the set you are looking for? As to the focus, the focus controls are on the same block where you turned
down the screen control to fix the set temporarily. What you need to do is take off the front screen. look at the focus controls and screen
control block. They will have a R, G, and a B next to the focus control. With the screen off the set and the TV turned on, look right into the
picture tube lens while rocking back and forth that color of tube you are looking into so that you can focus that color. Do the same for the
other two colors. Now, take a soft cloth, spray some Windex onto the cloth. wipe off the lens on the three tubes as well as on the mirrors and
that should make the set look pretty good for a short time till the set starts to shut down again.
Larry Dillon on January 8, 2008 12:48 AM
If you want to trust e-bay, thats fine. I have been beat three times by e-bay and e-bay says it is between me and the seller. The seller says too
bad.
projects4joe on January 8, 2008 9:46 AM
Larry Dillon said: Thats all good my friend, but that is only a temporary fix, and may work for a while, but you will still need to replace the
tube in the near future. What is the model number of the set you are looking for? As to the focus, the focus controls are on the same block
where you turned down the screen control to fix the set temporarily. What you need to do is take off the front screen. look at the focus
controls and screen control block. They will have a R, G, and a B next to the focus control. With the screen off the set and the TV turned on,
look right into the picture tube lens while rocking back and forth that color of tube you are looking into so that you can focus that color. Do
the same for the other two colors. Now, take a soft cloth, spray some Windex onto the cloth. wipe off the lens on the three tubes as well as on
the mirrors and that should make the set look pretty good for a short time till the set starts to shut down again.
Thanks for the info. My set is a Sony KP51WS500. Do you happen to know the part number for the Blue Bulb and where one can be found?
Johnnybgood2007 on January 8, 2008 3:04 PM
Larry Dillon said: If you want to trust e-bay, thats fine. I have been beat three times by e-bay and e-bay says it is between me and the
seller. The seller says too bad.
Larry, What you recomend
mark peterson on January 9, 2008 11:19 PM
Larry Sorry for posting so many times but i have not got a reply from any one so i will try again??have a sony kp57hw40 i have removed the
board(D) and cleand it with acetone Tv turns on sound ok picture ok for about 5 seconds then shuts down error code 8 looks like solder joints
are ok? should I replace flyback and if so what outher componits around the FB should I replace caps resistors dioads ?? or check?? sorry did
not finish highschool spelling is 1st grade level thanks larry for the help that You provide You r the man....mark...........UPDATE OK GOT RID
OF THE ERROR CODES BUT NOW IT LOOKS TO ME THAT i AM IN GREEN VERT COLLAPSE ......can you PLEASE help me trouble shoot
or send me a service manual I have downloaded prado from reading here on techlore marksssss@msn.com thank you
Larry Dillon on January 10, 2008 6:40 AM
Mark, if you have a line across the screen, the flyback is NOT your problem. I will send you the service manual but the first thing you will
need to do is look at the sweep voltage for the vertical output IC. Make sure that is good all the way up to the chip. Why did you need to clean
off the board off with acetone?
Larry Dillon on January 10, 2008 6:42 AM
Mark I tried to send you the service manual twice and it keeps coming back as wrong address? What gives?
alfredodba1927 on January 10, 2008 2:01 PM
ralphieboy said: First, I would like to thank you for some REAL information concerning TV repair. I realize repair people need to feed
their families also, but some of us still like to do it ourselves, if possible. That said, I have a Sony WEGA Model KV-32FS16. I will try to
describe the trouble as thoroughly as possible to hopefully narrow down the trouble. First let me say that so far as I can tell the blink code I
am getting is number 4 (4 blinks). I turn the set on for the first time, it stays powered on with no video or sound for a second or two, then
shuts itself off. After this I get the 4 blinks. I repeat the powering on and it turning itself off several times (usually about 6 or 7 times), and it
will eventually start the sound, and then the video several seconds later. During this process of repeated turning on, I can hear the picture
tube crackling a bit more and more with successive turn-ons, the loudest being just before the final turn on that lets it stay on. The set then
functions perfectly until I turn it off. It has never had any trouble whatsoever once it is on, and there are no blinks once it is on. I have
already removed the back and poked around, having repaired older tube televisions in the past, I am not fearful and know what to watch out
for such as the flyback. I found nothing that looks obviously fried or close to being so such as burnt looking or melting, etc.
David Fournier on January 10, 2008 5:03 PM
I wish that someone could answer my question from three days ago.
Sincerely,
David F
mark peterson on January 10, 2008 9:25 PM
Oh sorry Larry its markusssss@msn.com i forgot the U First I would like to thank you for all the help that provide us with...Tonight I will