I have the subject TV with a horizontal line. It has a LA-7838 Vertical deflection IC. How can I test it to insure it is good? I have sound. I have tried to re-solder around hot spots on board. All electrolytic CAPS ESR below .5 ohms. Chassis # ANEDP206 snipped-for-privacy@cox.net
Panasonic TV Model # CTN-2768S
Apr 30, 2005
2 Replies
The proper way is to order the service manual for the set. Take a DVM, and check the voltages at the pins, according to the service manual's information. Then also check for the proper waveforms with a scope, as also indicated in the service manual. From this you should be able to determine if the IC is defective. It is also possible that some of its support components are also defective.
JANA
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"Brian" wrote in message
news:4275d2fa.1066570967@news.west.cox.net...
I have the subject TV with a horizontal line. It has a LA-7838
Vertical deflection IC. How can I test it to insure it is good? I have
sound. I have tried to re-solder around hot spots on board. All
electrolytic CAPS ESR below .5 ohms. Chassis # ANEDP206
bwilbert@cox.net
Re-soldered some more around the IC and got the TV Working. Got to love it
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