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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: 1558
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
AiwaVX9142KDeadR516 270k in psu o/c14-09-04
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
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
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 1µ 50v14-09-04
AiwaVXT1000 Mk2Dead - no line driveD7 9v1 zener & C105 330µ 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 0.0033µ 1kv burnt; STK7348 psu chip s/c; R109 3R9 7w o/c14-09-04
AiwaVXT1000Mk2No pic sound okC88 3n3 1kv burnt14-09-04
AiwaVXT1000MkIISound no picture.Replace IC4(STK7348) and C88(3n3 1kv).14-09-04
AiwaVXT1010KDead - goes into st/byR515 3M3 , C517 C526 470uF 10v , C524 47uF 63v14-09-04
AiwaVXT1010KInt sw onReplace STK73907, C514 0µ082 pulse cap, Q501 2SK212, Q510 2SC1815. Change R520 to 68k & C524 to 220µ14-09-04
AiwaVXT1010KNo cold start upC524 47µ 10v14-09-04

AiwaVXT1400KERRed weak in picReplace C905, 7 & 9 1µ 50v in RGB drives14-09-04
AiwaVXT1410KPoor start up from cold, patterningC522 2µ 50v, C523 100µ 50v14-09-04
AiwaVXT1420kDeadStart up Res R502 1M & R503 820k14-09-04
AiwaVXT1420KSt/by onlyLOPTr leaky14-09-04
AiwaVXT1450KField collapseFR812 3R9 1w fusible o/c - no other fault found14-09-04
AkaiCT1417UKField collapseC411 leaky14-09-04
AkaiCT1417UKFRAME COLLAPSEC411 LEAKY14-09-04
AkaiCT20K2PADark pic - increasing sub brill resulted in field collR436 120k o/c14-09-04
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