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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: 109
NokiaSP63D1 SFNSt/by onlyReplace VE07 (s.m. transistor on front control panel, may read ok.)14-09-04
PanasonicEURO3W TXW28R3DPint. goes to stbyresolder line driver Tx T50214-09-04

PanasonicEURO3W TXW28R3DPLOPTr Q552 s/creplace Q552 BU2508AXRL and resolder line driver Tx T50214-09-04
PanasonicEURO3W TXW28R3DPno sound from internal or external speakers, Ok on headphonesno 12V on K board, DJ on IC7502 12V regulator14-09-04
Philips23DV1Audio not recorded; previous audio not erasedRemove connector from cable of erase-head and solder the wires directly on the erase-head. Check also whether metal-flakes are present in the flatcable connection of the audio-sync head. Note: touching the wires can already hide the complaint!14-09-04
Philips23DV1AUTOSTORE skips transmittorsIn case of high RF voltages (> 80DB UV), some transmittors are not stored. Solution: Modify time-constant in RF-AGC circuit: R3720 becomes 1kOhm. C2724 becomes 10 uF. Introduced in production from week 9319 onwards.14-09-04
Philips23DV1Codenumbers deckprocessorsSets produced with factory code < WD30 use the intel video controller with mask version MMTD2-XU. (4822 209 32506) Sets produced with factory code WD30 and higher use the Toshiba video controller with mask version MMTD4-XU. (4822 209 32736) . Whe14-09-04
Philips23DV1ModificationFor a better performance of the erase oscillator, the following components are modified in production: POS. 2620 - 47 nF - 4822 121 51655 POS. 2622 - 33 nF - 4822 121 4399614-09-04
Philips23DV1ModificationFrom DECK production code WD22 onwards, a new lift has been applied (Sets production code WD40 or RJ12). For "old" sets, the codenumber for the lift assembly 4822 443 63702 remains unchanged (but delivered with new lift and kit L). For "new" sets, 14-09-04
Philips23DV1Rattle during fast-forwardIf a Turbo-drive with Fast-Forward problems are brought-in for service: Check first of all whether thooth-wheels 116 and 117 sufficiently grip in each other. If these tooth-wheels rattle-over-each-other during fast forward, replace following components14-09-04
Philips23DV1Spare part informationA repair kit , containing PULLEY SHAFT + WORM SHAFT (POS. 47+48) is delivered with codenumber 4822 310 10657. This kit can be used for all TURBO- and ECO mechanisms !14-09-04
Philips23DV1Supply does not start, D6115 defectiveReplace diode 6115 on supply MSM1 by a 1N4148 (4822 130 30621).14-09-04
Philips3D140V OK and via SCART OKReplace U1018 (4822 212 22439) 14-09-04
Philips3DBrightness too high/fly-back line visibleCheck U 1555 (digital PCB; 4822 212 22585) 14-09-04
Philips3DCharacters wrongCheck U 1555 (digital PCB; 4822 212 22585) 14-09-04
Philips3DMoire on channel 5 (175 MHz)Apply HF-shielded antenna-cable (from wall-contact across VCR to CTV) or use special antenna-cable 4822 321 61225 14-09-04
Philips3DNo 140 VRemove audio output stage (PAS) U1003, +140 Volt is present. Replace IC7200, IC7210 (TDA1514/N4; 4822 209 70938). Also mount 2 diodes P4KE30C700 (4822 209 73095) in parallel to C2228 and C2229 (polarity is not important) 14-09-04
Philips3DNo 140 VRemove connector M17; voltage + 140 Volt is present. Replace TS7618 (2SD1577PH; 4822 130 43921) 14-09-04
Philips3DNo picture. After using TXT picture O.K.RGB switch in wrong position (external switch) 14-09-04
Philips3DSometimes no synchronizationReplace IC 7280 (DPU 2540; 4822 209 72138) on U 1555 14-09-04
Philips3DText does't functionCheck U 1555 (digital PCB; 4822 212 22585) 14-09-04
Philips3DTuner UV618/6456Tuner UV618/6456 ---------------- The tuner UV618 (4822 210 10304) is no longer available. For 3D sets please order 4822 210 10593. 14-09-04

Philips3DTuning does not functionCheck tuning voltage on pin 15 IC 7848. Replace IC 7848 (MEA 2901/07; 4822 209 72127) U 1008 14-09-04
Philips3DTuning unstableReplace U 1018 (4822 212 22439) 14-09-04
Philips3DVoltage +140V is presentReplace TS7618 (2SD1577PH; 4822 130 43921) 14-09-04
PhilipsD16-111 33DC2080/25RDead with R3498 1k5 1/2w overheatingLOPTx faulty & replace resistor14-09-04
SharpDV5103H/DV5903 D3000Chrom info out of register with lumSmall plug in non volatile memory chip IC1411 on digital PCB14-09-04
SharpDV51083 D3000Dead - HT ok when LOP dis'dLOPTx faulty14-09-04
SharpDV51083 D3000Tripping continously - int originallyC715 2200 16v LT res cap low cap14-09-04
SharpDV51083 D3000Trips after LOPTx replacementFOP chip TDA8175 s/c & supply res 1R o/c14-09-04
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