datasheet,schematic,electronic components, service manual,repairs,tv,monitor,service menu,pcb design
Schematics 4 Free
Service manuals, schematics, documentation, programs, electronics, hobby ....


registersend pass
Bulgarian - schematics repairs service manuals SearchBrowseUploadWanted

DatasheetsChassis2modelRepair tipsFulltext searchCables & Connectors
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: 561
MitsubishiBDS28WS11AK19PROWon't come out of st/by when sw to st/by aft operating for more than 5 minsSw mode Tr replaced14-09-04
MitsubishiBlack Diamond 11AK19ProDead with D829 UF5407 HT rect s/cD807 BA159 s/c, chopper Tr s/c 2SK2545 - used 2SK1507 in lieu, R817 2R2 5w o/c14-09-04

MitsubishiBlack Diamond 11AK19ProNo pic then E/W faultyC630 dry jointed, when resoldered had E/W fault - Q603 leaky fitted BUK457-600B in lieu also L604 faulty14-09-04
MitsubishiBlack Diamond BDS1451UK 11AK20-SSt/by onlyCheck 4Mhz Xtal by micro - may be dry jointed14-09-04
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
MitsubishiC21M1BM MPOPPING OR MOTORBOATING NOISE FROM SPEAKER IN SBYCHECK Q951 AND Q952 AND DRIES AROUND R954 R974 & R985 JC 501-Q , Mitsubishi 260P543050 . 2SA950-Y , Mitsubishi 260P25504014-09-04
MitsubishiC21M5BTInt start up at sw onNo line osc - R704 on SCL to micro o/c ( may be marked R703)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
MitsubishiC25A4STX Euro 4Dead , Line OP transistor SC.Replace C906 47uF 63v , R901 4R7 10W Q901 , IC901 , D907 , D908 ( both RD3.OFB1 ) and C975 47uF 63V.14-09-04
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
MitsubishiC25M2TXField collapseAN5521 FOP chip & C454 100µ 35v hi esr14-09-04

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
MitsubishiC28AV18No sound aft customer had been trying to "tune"Reprog EEPROM - sound setting should be either 10 or 2 if 10 is not poss14-09-04
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
page: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
 FB -  Links -  Info / Contacts -  Forum -   Last SM download : Yaesy FT-3000M

script execution: 0.12 s