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Repair tips

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

MakeModelProblemSolutionDate
Found: 122
De GraffCD51JS2BSwirling horizontal linesC562 22µ 250v in psu14-09-04
FinlandiaC22BZ5Tuning store/lock code - press within 5 secA,0,Chan-up,Store14-09-04

FinlandiaC22BZ7Tuning store/lock code - press within 5 secA,0,Chan-up,Store14-09-04
GoldstarCI20C22F PC42BReverts to st/by after sec of sw onIC831 GL7812 12v reg o/c14-09-04
GoldstarPC12B CIT2570FLines over pic & no R/C operationC827 1000µ 25v, C830 470µ 16v14-09-04
GoldstarPC42BNo start up - led indicator worksHT low at 35v (109v); 12v Reg IC83114-09-04
GranadaCD51JS2BSync absentC562 22µ 250v14-09-04
Luxor2BF110NNCol & sound slow to come on, slow chan change alsoProblem in I?C Bus - MSP2400 ( PLCC IC) on NICAM board14-09-04
LuxorB2 B2Dead.TN02 ( thyristor ) BRY551 *note must be L version.14-09-04
Mitsubishi28BW2BWhite horizontal line plus no picReplace IC401 (TDA8171) and R516 (0R82).03-01-06
MitsubishiCT28BW2BBRIGHT RASTER WITH FLYBACK LINES SET ARCINGREPLACE C551 AND R686 (CRT BASE)14-09-04
MitsubishiCT28BW2BMUFFLED SOUND FROM MAIN SPEAKERS DOLBY TEST PRODUCES NO SOUND FROM FRONT SPEAKERSREPLACE IC35114-09-04
MitsubishiCT28BW2BMuffled sound from main spkrs - no prologic sound o/pIC351 audio o/p chip TDA726314-09-04
MitsubishiCT28BW2BPoor pics with streaking on whitesR686 1k8 hi res in G1 supply14-09-04
MitsubishiCT28BW2BSmall Bright raster with fb lines - arcing from setC551 3nF arcing - blew R686 - uprate to 2k7 on CRT base14-09-04
MitsubishiCT28BW2BSmearing on whites - OSD gives faulty crt symptomR686 1k8 pin 5 crt base - change to 2k7 & set G2 to 00 in set up menu14-09-04
MITSUBISHICT28BW2BSMEARING ON WHITES LOOKS LIKE SOFT CRTREPLACE R686 ON CRT BASE 1.8K OHM14-09-04
MitsubishiCT28BW2BDLum intDry joint 8v reg Q952 (On same heatsink as IC401 7 pin LT reg)14-09-04
MitsubishiCT28BW2BDNo soundLT 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
MitsubishiCT28BW2BDReverts to st/by at sw onD507 BYD33G s/c in 28v supply to FOP14-09-04
MitsubishiCT32BW1BDead apart from pri HTReplace STRM6529 chopper chip, 0R22 res & check CCt prots in psu sec14-09-04
MitsubishiCT32BW1B W1Dead with no LEDs lit - quietley trippingCheck 2 current sensing res R907 and R915 in PSU. They are 0.22R and 0.27R in parallel for hi res14-09-04

Philips12B312/15SDead.Drys on sub PCB & BU type regulator.14-09-04
Philips2B+ 140 V not presentCheck soldering points of SOPS-transformer (T5663) and line transformer (T5620) 14-09-04
Philips2B+ 140 V not presentReplace TS7687 by 2SC3973B (4822 130 60851), change R3671 into 22 Ohm/5watt (4822 113 41152) and replace TS7685 BC547 (4822 130 44257) and replace TS7686 BC369 (5322 130 44593) and replace D6690 BZV85/C5V1 (4822 13014-09-04
Philips2BBlanked pic for first 5 mins from sw oncheck/replace 6x33k res on crt base; add 1N4148 in series with D649214-09-04
Philips2BCausing interference to FM radio reception.Mod.14-09-04
Philips2BChecking the power supplyChecking the power supply ------------------------- 1. Remove connector M17 2. Connect a lamp 220V/75W across C2701 3. Switch on set 4. Lamp lights, +140 V present This means power supply is OK 14-09-04
Philips2BContents of memory lostThe failure occurs when the set is switched off by the power switch. Replace battery 1925 (4822 138 10313) Check and replace if necessary IC 7925, IC 7926 (PCD 8571P; 4822 209 83571)14-09-04
Philips2BContinuous page header display in subtitleChange text IC to type MAB8461P/W196 part No4822 209 6247914-09-04
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