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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: 4551
PhilipsGR1AXLinearity coil panel.Linearity coil panel. --------------------- Only for 20" with production code PM or ZB: For the 20" GR1AX chassis a linearity coil panel has been used on position 5800: service code 4822 212 23641. REMARKS : Only applicable for sets with produc14-09-04
PhilipsGR1AXLINES ON PIC AFTER AN HOUR OR SO ON SOME SCENES brC2523 ( 6.8mfd )14-09-04

PhilipsGR1AXLocal controls inoperative.Check/replace IC 7700 (TMP47C434N-3537 + metal shielding; 4822 310 31947) Important: mount the metal shielding 14-09-04
PhilipsGR1AXLoosing colour during play-back of a video tape.Change C2322 to 820nF (4822 121 51436)14-09-04
PhilipsGR1AXLOW SOUNDD6715 5v1 ZENER NEAR IC770014-09-04
PhilipsGR1AXLow Vol - store /lock was set onTo remove:- select Ch38, press Store & Control up together14-09-04
PhilipsGR1AXModification of LOT 4822 140 10369.Modification of LOT 4822 140 10369. ----------------------------------- ONLY FOR FACTORY CODES STARTING WITH PM... OR ZB... The LOT (L 5530) for the GR1AX chassis has been modified. This has no or minor consequences for the chassis or the set. However, w14-09-04
PhilipsGR1AXNo +9V, line output stage is OK.If no +9V starting voltage, check D6523 for open circuit. (4822 130 61219) 14-09-04
PhilipsGR1AXNo channel change or tuning.IC TMP47C434-3559 tuning IC.14-09-04
PhilipsGR1AXNo col & vert black bar down screenCheck for crack in print by pin 10 of LOPTx14-09-04
PhilipsGR1AXNo colour.Check C2302 (10nF; 4822 122 33307). 14-09-04
PhilipsGR1AXNo frame lock or intermittent false frame lock; no sound.Set switches to stand by after ten minutes. Check pin 22 of IC7020. This voltage should only be low when no signal is present. Check/replace C2046 - 22nF (4822 122 40606). 14-09-04
PhilipsGR1AXNo HT from chopper cctD6610 BZX79C1014-09-04
PhilipsGR1AXNo line start up; +95 available; +9V is about 4.5V.1) Check/replace C2523 6.8uF (4822 124 41578). 2) Check/replace R3058 470R (0.5W; 4822 116 82258 for sets with production code PM.. or ZB.. 0.6W; 4822 050 24701 for sets with production code SV..) REMARKS : Initial start-up pulses at pin 14-09-04
PhilipsGR1AXNo line start-upCheck/replace D6523 (1N4148; 4822 130 30621) 14-09-04
PhilipsGR1AXNo or low sound.Select ch38 push store & 2x control buttons for few sec14-09-04
PhilipsGR1AXNo pic - blank raster when A1 advancedC2045 22nF leaky - In AGC cct to pin 10 IC7020 TDA830514-09-04
PhilipsGR1AXNo picture. OSD OKVoltage pin 10 IC7020 too low. Check C2045 (22nF; 4822 122 30103). 14-09-04
PhilipsGR1AXNo soundMono af sig present at I/p to IC7100 TDA8415 but no o/p - chip u/s14-09-04
PhilipsGR1AXNo sound or picreplacing tuner brought back sound - pic?14-09-04
PhilipsGR1AXNo sound or pic - loud hum thro spkrLOPTx faulty14-09-04
PhilipsGR1AXNo sound or picture.D6613 BYX79C15 leaky.14-09-04

PhilipsGR1AXNo sound or vision - low hummingLOPTx leak between windings 6-10 & 8-914-09-04
PhilipsGR1AXNo sound.Check IC7103 (TDA7052; 4822 209 60956). If IC7103 needs to be replaced, it is recommended to: * Delete jumper 9063 and diode 6101 (between pin 4 and 7 of IC7103) * Add jumper 9105 soldered to pin 4 and 7 of IC7103. REMARKS : This informati14-09-04
PhilipsGR1AXNo sound/pic - just blank screenC2044 4µ s/c14-09-04
PhilipsGR1AXNo sound/pic 95v HT only 10vLow res across +9 (10v) supply; was sound chip & D6613 BYX79C15 zener leaky14-09-04
PhilipsGR1AXNo tuningR3703 oc14-09-04
PhilipsGR1AXNo tuning voltsCheck R3703 o/c14-09-04
PhilipsGR1AXNO VIS , BLANK UNMODULATED RASTERC2045 ( 22nF ) CERAMIC CAP LEAKY14-09-04
PhilipsGR1AXOSD-display is black and white.Check/replace D6761 (1N4148; 4822 130 30621). 14-09-04
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