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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: 9
Sharp
4BSC 66AS05H
blank raster, OSD ok
SMD Q400 2SC2412/BC848 s/c (video buffer transistor)
14-09-04
Sharp
4BSC 66AS05H
Dead
Lop tr Q600 2SD1546 u/s. Line drive wfm at C607 cramped - Q606 2SC2412 sm leaky
14-09-04
Sharp
4BSC 66AS05H
Dead - LOPTr 2SD1546 failed
Replacement only lasted days - IC800 MC44002P line drive pin 12 only 1v instead of 3v - chip faulty. Also check state of Q601 2SC2271 dr tr & Q606 pre driver tr
14-09-04
Sharp
4BSC 66AS05H
Dead - no line drive
IC800 MC44002 jungle chip faulty
14-09-04
Sharp
4BSC 66AS05H
Dead with ticking
LOPTr s/c due to dry joints scan coil plug
14-09-04
Sharp
4BSC 66AS05H
excessive width with E-W error
L601 shorted turns (RCILP0104CEZZ)
14-09-04
Sharp
4BSC 66AS05H
No E-W corr aft replacing TDA8170 FOP chip, R645 & C506 for tripping off
Q603 2SD1913S collector base leakage, and C603 4.7uF high ESR
14-09-04
Sharp
4BSC 66AS05H
No line aft repairing dry joints scan coil & LOPTr s/c LEDs sw between Red/Green
leaky s.m. transistor Q606 [2SC2412] in the line drive circuit.
14-09-04
Sharp
4BSC 66AS05H
stuck in stby, when brought out LED goes green, quick burst of EHT, then shuts down with LED red
SMD Q606 2SC2412 leaky
14-09-04
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