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sharp 21V-J70M yellow picture w/ sound then goes out in seconds

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amin:
dear friend
this occurs in Philps n the faulty is the tube,you better have a test done before going forward in changing parts.get a crt of same quality n plug the chassis to it u can seethe result.i have just change a crt of philips with the same symptoms.best of luck
amin

egm:
hi amin

Thanks for the info it helps me a lot. more power....
til next time...

ed

summersun:
MAYBE YOU CAN CALL AN EXPERT ABOUT TV TO HELP YOU.

P.R.Gore:
Hi,
TA8403 is vertical O/P ic & it has nothing to do with blue dark raster. Check voltage at B cathode ,if it is low then fault may be of B amplifier circuit or B cathode getting leak with filament or G1. For B cathode short with filament, wind 3 to 4 turns of wire around FBT core, remove origional supply of filament from PCB, join two ends of newly wound wire to filament. Now ur tv will start working well without replecing CRT!!

egm:
Hi,

Thanks for your help it works, perhaps this is a late reply one more thing, do you have links to download schematic and servicemanuals. Thanks again... more power...

egm

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