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Electronic appliance repair tips database - TV (LCD,TFT,Plasma,Digital), Monitor, VCR, DVD recorder and player, Digital camera, Audio equipment, Microwave ovens, Phone systems, Computer repair
Make
Model
Problem
Solution
Date
Found: 6
ITT
3
447
Digi-3
No picture - sound & EHT ok.
D771 s/c , R771 o/c.
14-09-04
ITT
3
447
Digi-3
No sound & blank raster - stuck in AV mode.
IC1401 pin 25 latched high.
14-09-04
Mitsubishi
CT1
447
BM
Dead
IC901 STR44115, D906 (RG2) protection diode, R901 (4r7/7W) and C921 (47µF/50V).
14-09-04
Philips
L7.3A 25PT
447
3/79R
Dead with slight arcing sound
capacitor 2463 1000pf 2KV ceramic disc arcing
14-09-04
Philips
L9.1 25PT
447
5
sound int. goes off or no sound when warm
resolder Xtal 14MHz located next to pin 64 IC1822
14-09-04
Philips
L9.1E 25PT
447
5
No sound aft tuner replacement
Check option bytes in serv mode (enter by pressing 0,6,2,5,9,6,& menu) option SB incorrect
14-09-04
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