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: 34
JVCAV29BD3EKPoor greyscale - possible CRT defective if Philips - to adj greyscalePress info button ( "i" ) & Mute together to enter service menu. Option 2 reqs adj. 4 & 7 up/down = red; 5 & 8 = green; 6 & 9 = blue; Menu button = store14-09-04
Mitsubishi21AV1BDNo pic (blue screen) or soundRefitting a loose plug and soldering dj's on the dolby panel & replacing the onboard output IC TDA7263 and it's safety resistor gave a good picture with a loud hiss instead of sound. Go into service mode & reset eprom data to get sound back.14-09-04
Mitsubishi25AV1BDSdead/tripping led flashingreplace C702 1000µ 6.3v with 10µ & C955 2200µ 16v with 3300µ & do a reset (sw on whilst holding reset button in (near tuner)) & set up eeprom options14-09-04
MitsubishiBD28WSR629 27R e/w res burn up at sw onCheck C620, C621 and C630 for low cap14-09-04
MitsubishiBDS1451UK 11AH20-SSt/by onlyCheck D604 BA157 LH side of LOPTx & R/C is initialised after batt change - Initialise remote by pressing arrow L arrow R and arrow Down as well as number 1 at the same time14-09-04
MitsubishiBDS1451UK 11AK20-SSt/by onlyReplaced IC501 (ST92195B1B1) Micro & check 4Mhx Xtal14-09-04
MitsubishiBDS21SDead - no st/by LED & HT 90v approxC289 47uf 160v14-09-04
MitsubishiBDS28WS 11AK19Dead apart from LED dimly flashing green - will sw on & off - no EHT & HT (150v) low at 102vD807 in psu leaky14-09-04
MitsubishiBDS28WS 11AK19Entering service modefirst enter the installation menu, then press 4, 7, 2 & 5 respectively (another possibility is 2,3,5,7)14-09-04
MitsubishiBDS28WS 11AK19Int blows LOPTr at sw on - also EW FET & R629 could be damagedDry joint C63014-09-04

MitsubishiBDS28WS 11AK19ProInt shuts down to st/by with LED dimming - usually at start upFocus spark gap arcing - replaced CRT skt 30001855 ?1.39 from SEME14-09-04
MitsubishiBDS28WS11AK19PRODeadQ605 BU2508AF, C630 390NF 250V, C626 12NF 2000V, L604 E/W Coil, TR601 Line drive transformer, L604 15mH Coil, R629 27R, D807 BA159, D605 BA159, D606 BA159, C835 1nF 1000V14-09-04
MitsubishiBDS28WS11AK19PROSw to st/by aft 2 mins - G LED flasheswhen trying to come out of st/byD505 2v4 zener sm conn to pin 33 IC501 leaky14-09-04
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 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
MitsubishiCT2525AV1BDE/W faultyL504 shorted turns - Pt no MITS409P74901014-09-04
MitsubishiCT25AV1BDField collapseD561 s/c on E/W IC & R516 o/c14-09-04
MitsubishiCT25AV1BD EE3Blank raster with no sound or osdNo 8v - fit kit 8vREG-KIT from SEME14-09-04
MitsubishiCT25AV1BD EE3Dead - Green LED litchange C702 to 10uf & C955 to 3300uf also change R702 R213 & R214 from 220R to 1k & reset eeprom 14-09-04
MitsubishiCT25AV1BD EE3Dead - LOPTr s/cTEA2031A E/W chip IC551 faulty, R510 100R 2w overheating due to L501 6800uH shorted turns14-09-04
MitsubishiCT25AV1BDSService mode & EEPROM settingsSwitch on with mains switch and press service microswitch, select button 9 on the remote within 5secs. You will now be in the service mode. Use the buttons on the remote control for the following adjustments: * to toggle between adjustment displays 1 cancel; 2 increase adjustment code; 4 decrease data value; 6 increase data value; 8 decrease adjustment code; 9 adjustment mode on; 0 write to the eeprom( press this to write your changes to the eeprom) Here are the options- TUN 0; SAT 1; AUD 10; ATS 1; STD 1; SYS 1; AV1 2; EEX -; SPK 1; EEP -; ABG 02; A1 02;AL 00; ADK 15; MNP 70; TXT -; FFT 1; VOL 74;HYP 1; SCP 20; FMP 23. not all options appear to be available to some models. Adjustments in the VCJ mode will be in default mode and it will be necessary to observe display in order to set-up width height ew etc. 14-09-04
MitsubishiCT25AV1BDS EE3Int blows LOPTr at sw on from cold & lack of height/int contrast from coldC956 6.3V 470uF in 5V supply.14-09-04
MitsubishiCT25AVBDS EE3Int sw on/ off - G LED lights but no pic/sound (no line drive)C956 470uF 6.3v in secondary power supply circuit, close to IC95114-09-04
MitsubishiCT25AVIBDSSlow startup.Change C955 ( 2200uf )14-09-04
MitsubishiCT28AV1BDNOT HOLDING M1 SETTINGSFIT 8V REGULATOR KIT14-09-04
MitsubishiCT28AV1BDPopping soundChanged CRT base pcb14-09-04
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
page: 1 2
 FB -  Links -  Info / Contacts -  Forum -   Last SM download : Akai 14CT01 & 21CT21FS Ver 1

script execution: 0.10 s