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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: 7
Matsui
21V1N
Dead
dry joints C60026, D60023/24 (1N4003), T60020 chopper FET IRFB640C, IC60030 µC3843N, R60027/28 0R57 o/c
14-09-04
Matsui
21V1N
Dead - 2.5A mains fuse blackened
BY127 mains rects s/c; IRFBC40 chopper tr T60020 s/c - used BUZ91; chopper chip UC3843
14-09-04
Matsui
21V1N
Dead with mains fuse o/c
R60027/8 (both 0R56), D60011/12/13/14/23/24, BUZ91 (chopper tr), IC60030 (UC3843), & check for DJ C669
14-09-04
Matsui
21V1N
mains fuse blown
D60011/12/13/14/23/24 s/c & BUZ90 chopper tr. IC60030 replaced as precaution
14-09-04
Matsui
21V1N
No HT control
HT pot R60027 increased in value from 0R68 to 1R6
14-09-04
Matsui
21V1N
No sound after psu rebuild
AF ok at I/p to Nicam panel. No 8v to IC3960 due to CD3963 sm diode LS4148 o/c
14-09-04
Matsui
21V1N
CUC7350
Dead - HT only 25v
Check R60027 0R56 & R60026 0R56 high res or o/c
14-09-04
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