Hi,our tv ia a IDLCD42TV25HD.six months old and the picture has started flickering alot,tis lasted afew days,then the picture just goes off for awhile then comes back on but flickers again,ive checked all the leads and scarts but they are all ok and in place.please help me.
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someone needs to open it but it sounds like a part arcing which was not uncommon in those sets====you would have to decide if you want to attempt to have it repaired----some shops will not repair a set that old and unless you really want it done---I would replace it.
Depending on how old the set is, if over ten yaers old not worth fixing because sony had a bad picture tube for that model and it would start dawning to much current and wipe out the high voltage section,. and if you repair it , about six months later it has a good chance of going out again, I wouldbuy a new set.
Yes first it may just be bad solder on the
flyback transformer , or the Picture in Picture
module has some bad caps . a fair shop
price is about 180-200 and it worth the repair
they are great TVs and are made to last.
ps i have repaired my mitsubishi once , and
its going strong. 18 years old .
It looks like the squeal or high pitch is produced by the flyback part # 257805. Also check the the secondary side of the power supply for around 130VDC if that voltage is found to be lower than 120VDC I would suggest to replace CP80 with a 100 mfd@250 vdc. Part # 218374
Globalsemi.com has these parts, for the flyback transformer just type in search for FLY-391, this one is cheaper than the genuine(257805) fly back.
I would try adjusting the screen control on the flyback. The flyback can be easly located, find the red wire attached to the top of the picture tube & follow it down to the flyback. on the flyback you should find two controls, one screen & one focus. you sould be able to read the words above each control, only adjust the screen one. slightly increase the control till the picture stays on, if you turn it too much you will get small white lines going across the screen. Now if what i have told you fixes the set, then it is only a tempoary repair. could last days or mothes, maybe years. if it starts to happen again later the set will have to be replaced. this is a sign of the picture tube starting to get a weak. ALSO DO NOT PLAY WITH THE RED WIRE IT CARRES VERY HIGH VOLTAGES EVEN WHAN UNPLUGGED FOR DAYS.