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


◦ register ◦ send 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: 99
Bush2550NTXCuts out aft several hrs with HT rail pulsingR816 47R sm feedback to chopper chip int o/c14-09-04
Bush2550NTXPreventative maintenanceCheck scan coil plug for dry joints - if burn up occurs could be write off14-09-04

Bush2557NTXDead with blackened mains fuseBR901 mains bridge rect s/c, C905 220µ 400v s/c14-09-04
Bush2557NTX OnwaDead - s/c LOPTr & buzzingL401 dry joint B+=145v14-09-04
Bush2557NTX OnwaDead with psu buzzing - LOPTr s/cDry joints L401 & fit BU2508AF LOPTr - check separate psu caps for hi HT - 10 & 47µ14-09-04
Goodmans255NSBright Blue blank rasterConnector on crt base leaky14-09-04
Goodmans255NSContrast weak & poor sync on AV2DA18 5v6 zener s/c14-09-04
Goodmans255NSDead with psu runningNo or low line drive at base Q402 line dr - check Trs Q405 2SA854 & Q406 2SC945 for leak14-09-04
Goodmans255NSField collapseReplace field chip IC301 (TBA8351), C413 (47uF 160v) and D408 (BYV95C) & check for dry joints14-09-04
Goodmans255NSno picture - sound, heaters, EHT were OK.Decoupling cap C417 4n7 400v leaky14-09-04
Goodmans255NSNo sync - line or fieldTDA8362 sig proc chip under screening can14-09-04
Goodmans255NSReverts to st/by intR840 150R, Q803 BUT11, D811 BYV95014-09-04
Goodmans255NSWEAK CONTRAST AND POOR SYNC ON AV2REPLACE DA1814-09-04
Goodmans255NS/285NSBlank raster int reverting to st/by - no R/C responseNo osc on I602 multi sound proc chip - resolder X601 or replace Xtal14-09-04
Goodmans255NS/285NSOSD smeary - esp on GreensI501 TDA8375A leaky across G/B I/p pins - replace IC14-09-04
HitachiC2556/2586HT setting152v14-09-04
HitachiC2556TNDeadR950 68k ?w hi res (near ht pot)14-09-04
HitachiC2556TNINT DEADDry joints set HT pot14-09-04
HitachiC2556TNInt deadcheck dry joints IC95114-09-04
HitachiC2556TNInt goes dead only to reapear several secs laterDry joints pot R950 - tight up against plastic cradle14-09-04
HitachiC2556TNInt goes to st/by or offHappens when disturbed mainly - check wire links at front of pcb for dry joints14-09-04
HitachiC2556TNInt loss of sound/picDry joints L7805 IC951 5v reg14-09-04

HitachiC2556TNInt off when disturbedCheck HT pot VR950 by replacement- & check R95014-09-04
HitachiC2556TNTrips 3 - 5 secs aft sw onR950 68k hi res14-09-04
HitachiC2557NWeak sound & low contrastC758 100nf S/C ALB line.14-09-04
HitachiC2558repeated failure of TDA3654 field o/p chipdry joint scan coil tag also replace flyback boost cap to pin 6 (47 or 100µ)14-09-04
HitachiC2558TNHigh HTR941 100k, ZD941 10v zener - HT = 157v14-09-04
HitachiC2558TNSlow start up12v rail low - C933 2200µ 25v14-09-04
HitachiC2558TNst/by - wont come out of using front controlsuse hset - reason u/k14-09-04
HitachiC2558TNTripping to st/byC931/2/3 on sec of sm trfmr - Note R/C reqd to bring set out of st/by14-09-04
page: 1 2 3 4
 FB -  Links -  Info / Contacts -  Forum -   Last SM download : Motorola Motorola Cracker

script execution: 0.05 s