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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: 19135
Sanyo CB5759 can't be activated from standby. WHen attempted, the st/by light goes out then beings to flash.The failure sounds like a short circuit after the secundaire part of the power supply. You could e.g. try to check if the high voltage transistor is shorted? 02-07-05
AikoCT20Int deaddry joint R23314-09-04

AikoCT20Int field - heightFOP tr Q303 2SB546A faulty - used TIP42C in lieu14-09-04
AiwaC202KERField collapseFusible link 1500 marked as jumper lead from loptx to reg via D681314-09-04
AiwaCXZR800KAt sw on relay clicks "DEMO" displayed then dead - keeps repeatingCheck 2 x 2SK2723 FETs on sound o/p heatsink14-09-04
AiwaSE211KSt/by onlyR617 high (replace with 390K 1/4W) - located behind LOPTX.This causes the micro-controller to shut the set down and store this condition in the EEPROM. You can either replace the EEPROM with the correct one from Aiwa (which then requires setting up with a special handset), or use an EEPROM programmer to reset the values. There are two values that require resetting: $0139 should be $00 ($2F when faulty) $013C should be $00 ($33 when faulty) 14-09-04
AiwaTVC211St/by onlyReplace EEPROM & R617 - the cause - which goes hi res 14-09-04
AiwaTVSE211No vid/raster with sound - no/poor OSDIC303 (OSD Sw) pt no Aiwa87A2116701014-09-04
AiwaVTV CTV/VCRDeadR 519 100k STARTUP CIRCUIT. HT SUPPLY ( 103v ) VIA THIS CIRCUIT. SIMILAR TO ORION VTV.14-09-04
AiwaVX9142KDeadR516 270k in psu o/c14-09-04
AiwaVXD1420Pin code removalEnter wrong no 3 x, then press Vol- on set & "7" on R/C for 5 secs when "protected" appears14-09-04
AiwaVXD2120KPin code resetting when lostunplug set for 1 hour plus. reduce volume to minimum. simultaneuously press Volume down on unit and "7" to reset pin code and customer ID14-09-04
AiwaVXG142No raster - OSD OKQ1029 near tuner14-09-04
AiwaVXG142KDead - no st/byR516 270K, IC501 TDA4605-3, Q500 2SK2397-01MR14-09-04
AiwaVXG142KDead - no stbyR516 270k, IC501 TDA4605-3, Q500 2SK239714-09-04
AiwaVXG142KDead with st/by led lit - accepts a tape but no functsICP506 1A CP on tv pcb o/c14-09-04
AiwaVXG142KDead with fast tripping aft power cutC513/C538 1m 160v in psu hi esr14-09-04
AiwaVXG142KNo pic or vcr mechs - osd & sound okReplacing the faulty switching transistor Q511 [2SB926] which supplies the chroma +9V cured both faults. It is situated at the back LHS of the VCR board.14-09-04
AiwaVXG142KNo sigsQ1029 (2SC926) at rear of vcr pcb s/c - used a BD234 14-09-04
AiwaVXS140Blank raster & no VCR funct except clockFR551 [0.1 ohm 1/6 Watt] O/C 14-09-04
AiwaVXS140Lack of brightness on Video playback & off airNo 800V screen drive Increase FR752 from ( 1K ) to ( 1K5 ) PtNo 8702238806014-09-04
AiwaVXS140TV sect remains on (No st/by)115V power switching transistor Q550 [2SB816E] was S/C C-E14-09-04

AiwaVXT1000Dead TV sectIC4 STK7348, R103 1R5 3w, R104 27R 3W, R105 1k 1/2w. C90 1 50v was to blame14-09-04
AiwaVXT1000STK7348 chopper chip int failsC88 3300pF 1kv can be the cause even tho' it looks ok14-09-04
AiwaVXT1000 Mk2DeadHt ok at 120v - ICP1 o/c14-09-04
AiwaVXT1000 Mk2DeadSTK7348 s/c pins 3 & 7, also R103 1R5 3W o/c, R104 27R 3w, R105 1k 1/2w & C90 1 50v14-09-04
AiwaVXT1000 Mk2Dead - no line driveD7 9v1 zener & C105 330 16v both s/c14-09-04
AiwaVXT1000 Mk2Failure of IC STK7348 in tv psuReplace:R102. 33ohmlW Part No S5 34A 330 000 R104 27ohm 3W Part No Sl 330 703 000(6.25UKP) RlOl 33ohm7W Part No Sl 330 862 000(8.37UKP) Also please check and if necessary replace:R103(3.76UKP) R105 Replace as required. R109(4.00UKP) NOTE: Do not replace IC on its own.<<14-09-04
AiwaVXT1000Mk2DeadSTK7348 psu chip & C88 0.0033pf 2kv14-09-04
AiwaVXT1000Mk2Dead TV sect - vcr sect okC88 0.0033 1kv burnt; STK7348 psu chip s/c; R109 3R9 7w o/c14-09-04
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