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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
Make
Model
Problem
Solution
Date
Found: 4551
Philips
GR1AX
Linearity 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 produc
14-09-04
Philips
GR1AX
LINES ON PIC AFTER AN HOUR OR SO ON SOME SCENES br
C2523 ( 6.8mfd )
14-09-04
Philips
GR1AX
Local controls inoperative.
Check/replace IC 7700 (TMP47C434N-3537 + metal shielding; 4822 310 31947) Important: mount the metal shielding
14-09-04
Philips
GR1AX
Loosing colour during play-back of a video tape.
Change C2322 to 820nF (4822 121 51436)
14-09-04
Philips
GR1AX
LOW SOUND
D6715 5v1 ZENER NEAR IC7700
14-09-04
Philips
GR1AX
Low Vol - store /lock was set on
To remove:- select Ch38, press Store & Control up together
14-09-04
Philips
GR1AX
Modification 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, w
14-09-04
Philips
GR1AX
No +9V, line output stage is OK.
If no +9V starting voltage, check D6523 for open circuit. (4822 130 61219)
14-09-04
Philips
GR1AX
No channel change or tuning.
IC TMP47C434-3559 tuning IC.
14-09-04
Philips
GR1AX
No col & vert black bar down screen
Check for crack in print by pin 10 of LOPTx
14-09-04
Philips
GR1AX
No colour.
Check C2302 (10nF; 4822 122 33307).
14-09-04
Philips
GR1AX
No 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
Philips
GR1AX
No HT from chopper cct
D6610 BZX79C10
14-09-04
Philips
GR1AX
No 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
Philips
GR1AX
No line start-up
Check/replace D6523 (1N4148; 4822 130 30621)
14-09-04
Philips
GR1AX
No or low sound.
Select ch38 push store & 2x control buttons for few sec
14-09-04
Philips
GR1AX
No pic - blank raster when A1 advanced
C2045 22nF leaky - In AGC cct to pin 10 IC7020 TDA8305
14-09-04
Philips
GR1AX
No picture. OSD OK
Voltage pin 10 IC7020 too low. Check C2045 (22nF; 4822 122 30103).
14-09-04
Philips
GR1AX
No sound
Mono af sig present at I/p to IC7100 TDA8415 but no o/p - chip u/s
14-09-04
Philips
GR1AX
No sound or pic
replacing tuner brought back sound - pic?
14-09-04
Philips
GR1AX
No sound or pic - loud hum thro spkr
LOPTx faulty
14-09-04
Philips
GR1AX
No sound or picture.
D6613 BYX79C15 leaky.
14-09-04
Philips
GR1AX
No sound or vision - low humming
LOPTx leak between windings 6-10 & 8-9
14-09-04
Philips
GR1AX
No 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 informati
14-09-04
Philips
GR1AX
No sound/pic - just blank screen
C2044 4µ s/c
14-09-04
Philips
GR1AX
No sound/pic 95v HT only 10v
Low res across +9 (10v) supply; was sound chip & D6613 BYX79C15 zener leaky
14-09-04
Philips
GR1AX
No tuning
R3703 oc
14-09-04
Philips
GR1AX
No tuning volts
Check R3703 o/c
14-09-04
Philips
GR1AX
NO VIS , BLANK UNMODULATED RASTER
C2045 ( 22nF ) CERAMIC CAP LEAKY
14-09-04
Philips
GR1AX
OSD-display is black and white.
Check/replace D6761 (1N4148; 4822 130 30621).
14-09-04
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