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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: 13
SonyBE-3D KV28WS2Ubuzzing on sound, IC260 gets hotresolder earth pin on plug CN30314-09-04
SonyBE-3D KV28WS2Uint no remoteIR receiver IC900 89417905114-09-04

SonyBE-3D KV28WS2Uno pic, sound Okno line drive, R870 1R 1W o/c14-09-04
SonyBE-3D KV28WS2Uno soundD613 FMN-G12S o/c (871905838)14-09-04
SonyBE-3D KV28WS2Uvol goes up or down on its own, channels wipe out of memory, unusual characters on LHSint lockup of IC3, replace with new software type (IC3 TMS27PC0200-15 software 15FMBW706 or later, part number 875945310)14-09-04
SonyBE3D KV28WS2UAt sw on reverts to st/by with LED flashing twiceMeasure volts at collector Q606 (located in the middle of the PCB towards the right edge), if it stays at 0V, then you need to replace or re-set the EEPROM, if it goes high - then overcurrent protection is activated, suspect faulty LOPT. After replacing the LOPT, collector Q606 should stay at 0V and the set should come on, however with some software versions, the error code 2 will remain in the memory and you need to clear it manually.To clear the error code from the EEPROM you can replace it with a blank one, but it is much easier just to re-set it. While your error code 2 is still flashing, press on the remote control: [5], [-/--], [5], [9], [Standby], [i], [5], [vol+], [TV]. The set will come on in the service mode with TT-- on the screen, press [MENU] and write down all the settings for picture, geometry and sound. Then press [MENU] again to return to TT-- screen. Enter 49 to clear the EEPROM, and switch the mains off. Now go back to the service mode (TT-- on the screen), enter 24 to set destination "UK", then press [MENU] and enter all the settings what you have written down. The sequence [5], [-/--],[5],[9] sets the TV on program 59; the sequence [Standby], [i], [5], [vol+], [TV] is used to enter the service mode. In order to execute the command TT49 (re-set EEPROM), the TV must be on program 59.14-09-04
SonyBE3D KV28WS2UBUZZING NOISE THROUGH SPEAKERSCHECK EARTH CONNECTION ON CN303 PLUG FOR O/C OR DRY JOINT14-09-04
SonyBE3D KV28WS2UDead at sw on - will produce a click from relay after a period of time. When G2 advanced, line collapse noticedCheck for dry joints around scan coils plug, check R870M for o/c 1R, 1w14-09-04
SonyBE3D KV28WS2UEEPROM corruptionCaused by flashover of red gun in crt - crt replaced under warranty (if lucky)14-09-04
SonyBE3D KV28WS2ULED flashes twice aft LOPTx replacement to cure dead setCheck EEPROM 24C32 in IF sound module by replacement. Enter service mode & at TT promt enter country code 24 (UK system) - prevents need for setting each chan band when tuning14-09-04
SonyBE3D KV28WS2ULED successively flashes twiceM24C32-MW6T EPROM IC2 - 8 leg sm device pt no 87595249414-09-04
SonyBE3D KV28WS2USt/by only LED flashes error code 2Instead of replacing the EEPROM try the following - Whilst LED is flashing enter serv mode (St/by, I, 5, vol+ & TV). This disables prot & set comes on with "TT--" . Press "0, 8" on R/C which will clear error buffer.14-09-04
SonyBE3D KV28WS2USt/by only LED flashes error code 2LOPTx can be cause, confirmed by measuring volts coll Q606 in prot cct. If it rises to 11v LOPTx faulty (should be 0v) - then enter serv mode & disable prot (see other entry). 14-09-04
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