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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: 74
Conti20KV7 BekoReverts to st/by at sw onIC701 TDA6107Q on crt base14-09-04
FergusonICC7 B59FSt/by onlyDL18 1N4148 leaky14-09-04

FergusonICC7 B59FVideo response poor with streakingR704 1k5 on crt base hi res14-09-04
GECTVC2437BInt off - no power LEDDry joints PSU R183 22k & tfmr14-09-04
MitsubishiC14M7B DaewooField collapseReplace IC 301 TDA8356, & replace smoothing cap C309(47uF) with 22uf (ECEA 2A220)160 Volts. Across legs of capacitor fit a 0.1uF (ECQM2A104J),and the link marked R420 replace with 2R2/.5W safety resistor (ERQICI2HCJ2R2). Also check supply rail diode.(Part numbers are Panasonic BTW)14-09-04
MitsubishiC21T7BFine hor lines across screenIC951 TDA8171 FOP chip14-09-04
MITSUBISHIC21T7BFINE HORIZONTAL LINES ON SCREENREPLACE FRAME IC951 IC**TDA817114-09-04
MitsubishiC2557BNo Menu, OSD or able to acess service modeIC702 EEPROM Mits274P74701014-09-04
MitsubishiC25C7BCol flashes on screen, col sat varies - intDry joint Chroma Xtals X601 & 60214-09-04
MitsubishiC25C7BDead - Green LED fast flashing - after psu repairQ901, Q552, D909 s/c, R991 o/c, C914 47µ low cap & Q501 leaky14-09-04
MitsubishiC25C7BField collapse & no soundZ551 o/c due to D507 s/c & IC551 E/W chip s/c pin 614-09-04
MitsubishiC25C7BFRAME COLLAPSE AND NO SOUNDREPLACE Z551, D507, AND IC55114-09-04
MitsubishiC25C7BInt no green aft 30 minsIC660 TEA50101B on crt base14-09-04
MitsubishiC25C7BINT NO GREEN LOOKS LIKE CRTREPLACE IC660 ON CRT BASE14-09-04
MitsubishiC25C7BNo pic aft 5-10 mins - sound okDry joints Xtal resonator X70114-09-04
MitsubishiC25D7BNO SURROUND SOUNDSELECT SPECIAL MENU,ENSURE "STANDARD TV" IS "OFF" SWITCH OFF FOR 30 SECS14-09-04
MitsubishiC25D7BNo surround sound - when selecting in menu it shows "OFF" & can't be turned back onSoftware bug - select special menu & ensure "Standard TV" is set to "Off", sw off for 30 secs. Sw back on & Surround sound can now be set14-09-04
MitsubishiC25D7BSlow start up, no Txt, juddering pic & vol slowEEPROM faulty Pt no MITS274P747010 & change IC701 Pt no MITS274P75505014-09-04
MitsubishiC2857BDead with st/by light flashingAll PSU sec volts ok - line dr at LOPTr base dist - Q501 faulty (OK tested out of cct)14-09-04
MitsubishiC28C7BInt col & blows Q552 LOPTrDry joints earth links grounding C607 & pin 30 IC201 Jungle chip14-09-04
MitsubishiC28C7BNo pic - sound okC655 0µ015 2kv leaky14-09-04
MitsubishiC28C7BNO SOUNDFAULTY NICAM PCB14-09-04

MitsubishiC28C7BNo soundNICAM PCB Pt no 921C21600514-09-04
MitsubishiC28C7BNo sound or pic, HT at 145v & Green LED flashingQ501 JC501R line dr Tr leaky - Pt no MITS260P74803014-09-04
MitsubishiC28D7BNo soundIC3A1 IC3A2 and IC3B1. It is always the middle one that goes s/c and blows Z902 which then removes the 28v supply to these ICs. You can check which one is s/c by unsoldering pin 9 of each ic one at a time and the check for s/c across PLUG DE which is the 28v supply14-09-04
MitsubishiCT1447BMDeadIC901 STR44115, D906 (RG2) protection diode, R901 (4r7/7W) and C921 (47µF/50V).14-09-04
MitsubishiCT2117BMCol cycles thro' auto grey scale at sw on with flashing linesCaused by High HT - C911 33µ 50v, C910 33µ 50v & C913 100µ all hi esr14-09-04
MitsubishiCT2227BMDead - int deadDry-joints on line driver transformer14-09-04
MitsubishiCT2227BMfield collapse with burning smellC412 330µ and C41314-09-04
MitsubishiCT2227BMNo sound or raster.R7A0 ( 1.2ohm ) o/c on remote panel.14-09-04
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