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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: 917
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
SonyBE3D KV29F2UHeight excessive varies with pic content then collapses aft 3 mins shuts down with LED flashing error 2IC606 LM2940CT 9V regulator s/c from input to output in PSU secondary, thus the +9V line was high and varied with picture content.14-09-04
SonyBE3D KV32WF1NO SOUNDREPLACE IC1200, PS602, Q1200 AND Q120114-09-04
SonyBE3D KV32WF1UDEAD WITH POWER SUPPLY SCREAMINGREPLACE LINE O/P TRANSISTOR Q80214-09-04
SonyBE3D KV32WF1USerrated line at top & bottom of screenFit improved line driver trfmr pt no 1-437-090-3114-09-04
SonyBE3E KV28FX20No chan change unless menu pressed firstEPROM chip corrupted - ok once set was autotuned again14-09-04
SonyBE4Dark picC823 0µ022 250v leaky in beam lim cct14-09-04
SonyBE4Dead - LED blinks 6 times (Field fault)TDA9302H FOP chip dry jointed and u/s14-09-04
SonyBE4Dead - LED flashes 6 times then repeatsOver current problem - Loptx u/s14-09-04
SonyBE4Field collapseNo 24v supply to IC501 - R814 0R47 ?w fusible o/c - improved type 1-249-443-11 introduced14-09-04
SonyBE4No txt or OSDR081 o/c, C810 also failed14-09-04
SonyBE4Pic displaced down by 2cmVolts on Q500 & 501 way out - Jungle chip MC44007P faulty14-09-04
SonyBE4Reverts to st/by at sw on with 6 flashes from LEDover-current protection circuit (Q600, 602) is operating, usuallyprobs in LOP. To identify the cause, first dis FOP chip (IC501). If set switches on with frame collapse, replace IC501. If set fails to switch on, dis HT feed to LOPTx. This should give 4 flashes of st/by LED (no horizontal fly-back) showing that problem is in LOP. Check LOP comps before condemning LOPTx. If st/by LED continues to flash 6 times even with LOPTx disd, check R620 (270K) & R622 (470K) in over-current protection cct.14-09-04
SonyBE4Txt can't be selected - nothing happens when you tryEnter service mode, and at the "TT" prompt type "18". This will turn teletext on or off depending on how it was originally set. Sets which do not feature teletext or have the wrong version of IC001 fitted will only display P100 when teletext is selected.14-09-04
SonyBE4 ChassisInt trips off - led flashing 6 timesBlue screen momentarily at sw off - int s/c in crt14-09-04
SonyBE4 KV14T1UAuto grey scale lines visible at top of screenEPROM ST24C02CB1 IC002 faulty14-09-04
SonyBE4 KV14T1UDead - no led lit or flashing0.47R resistor from the 300volts input to the chopper TX was O/C, replace STRS5706 chopper chip, still dead - LOPTr S2055N leaky If LOPTx is grey, R806 1.5R with a 1.8R resistor Part number 1-216-352-11. 14-09-04
SonyBE4 KV14T1UDeadcracks in print around loptx14-09-04
SonyBE4 KV21M3UField collapseR814 0R47 in 24v supply o/c - use proper improved Sony type14-09-04
SonyBE4 KV21T3UInt deadR607 0R56 2 watts had risen in value to nearly 2 ohms14-09-04

SonyBE4 KVM2171UDead after half an hourSTRS5706 IC60114-09-04
SonyBE4/4ATripping with 6 flashes from LED & rush of EHTLOPTx - EHT sect faulty14-09-04
SonyBE4ADead - 6 blinks from ledOvervolts or current indicated - check HT (118v) - use dummy load; C608 10µ, C620 100µ 160v, STRS5706 poss & loptx14-09-04
SonyBE4ADead - CP602 on sec psu o/cReplacement cures fault only temp - CP602 to N75 (2.5A); Add 5v6 zener between pins 1 & 9 IC803, add 5v6 zener between pins 9 & chassis on print side of pcb14-09-04
SonyBE4ADead - st/by LED flashes 4 times (No lop)No line drive from IC301 MC44007P - chip u/s14-09-04
SonyBE4AField collapse with visible lineSTV9379 fop IC & 24v fusible next to loptx14-09-04
SonyBE4A ChassisFrame collapse. Replaced frame output chip, but picture geometry was not OK. The voltage at pin 8 of MC44007P chip measured low.If picture Geometry after replacing Vertical outp. Chip is not in order, replace also MC44007P. (Replaced also STR-S5706 in case an overvoltage caused the fault)14-09-04
SonyBE4A ChassisFrame collapse. Replaced frame output chip, but picture geometry was not OK. The voltage at pin 8 of MC44007P chip measured low.If picture Geometry after replacing Vertical outp. Chip is not in order, replace also MC44007P. (Replaced also STR-S5706 in case an overvoltage caused the fault)14-09-04
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