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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: 14
Mitsubishi
28
BW
2B
White horizontal line plus no pic
Replace IC401 (TDA8171) and R516 (0R82).
03-01-06
Mitsubishi
CT28
BW
2B
BRIGHT RASTER WITH FLYBACK LINES SET ARCING
REPLACE C551 AND R686 (CRT BASE)
14-09-04
Mitsubishi
CT28
BW
2B
MUFFLED SOUND FROM MAIN SPEAKERS DOLBY TEST PRODUCES NO SOUND FROM FRONT SPEAKERS
REPLACE IC351
14-09-04
Mitsubishi
CT28
BW
2B
Muffled sound from main spkrs - no prologic sound o/p
IC351 audio o/p chip TDA7263
14-09-04
Mitsubishi
CT28
BW
2B
Poor pics with streaking on whites
R686 1k8 hi res in G1 supply
14-09-04
Mitsubishi
CT28
BW
2B
Small Bright raster with fb lines - arcing from set
C551 3nF arcing - blew R686 - uprate to 2k7 on CRT base
14-09-04
Mitsubishi
CT28
BW
2B
Smearing on whites - OSD gives faulty crt symptom
R686 1k8 pin 5 crt base - change to 2k7 & set G2 to 00 in set up menu
14-09-04
MITSUBISHI
CT28
BW
2B
SMEARING ON WHITES LOOKS LIKE SOFT CRT
REPLACE R686 ON CRT BASE 1.8K OHM
14-09-04
Mitsubishi
CT28
BW
2BD
Lum int
Dry joint 8v reg Q952 (On same heatsink as IC401 7 pin LT reg)
14-09-04
Mitsubishi
CT28
BW
2BD
No sound
LT reg's were dry jointed causing intermittent loss of picture and sound, and I am sure this is what corrupted the eeprom. The Chassis is an EE3W and to access the service menu you need to press this sequence. "Menu,2,3,5,7". the adjustments are made in the same way as the EE3.
14-09-04
Mitsubishi
CT28
BW
2BD
Reverts to st/by at sw on
D507 BYD33G s/c in 28v supply to FOP
14-09-04
Mitsubishi
CT32
BW
1B
Dead apart from pri HT
Replace STRM6529 chopper chip, 0R22 res & check CCt prots in psu sec
14-09-04
Mitsubishi
CT32
BW
1B W1
Dead with no LEDs lit - quietley tripping
Check 2 current sensing res R907 and R915 in PSU. They are 0.22R and 0.27R in parallel for hi res
14-09-04
Toshiba
1400RBT/R
BW
Field collapse
C303 2µ2 ramp gen cap leaky & C317 2µ2 in lin fb cct leaky causing vert centre fault
14-09-04
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