Philips Repair Tips
Search: philips
Results: 14233
Results: 14233
| Make | Model | Symptom | Problem | Solution | By |
|---|---|---|---|---|---|
| PHILIPS |
GR1AX
|
Programme tuning difficulty, stations shifted on the tuning bar. | Stations appearing to the right of the usual position on the tuning bar although the bar itself scans normally. higher channels may not be accesssible at all. investigation has shown that although the 33v supply and the pulse drive from pin 1 of ic7700 | ||
| PHILIPS |
GR1AX
|
Production change to line drive | Production change to line drive ------------------------------- a production change has been introduced to the line drive circuit. receivers affected are factory coded sv008921 and higher. reason: to improve the function of the line drive circuit. pos | ||
| PHILIPS |
GR1AX
|
Production change to +9v supply | Production change to +9v supply ------------------------------- a production change has been introduced to the +9 volt supply. receivers concerned are factory coded sv008921 and higher. position old new code no. 3100 | ||
| PHILIPS |
GR1AX
|
Power supply tripping. | 95 volt line pulsing. check/replace r3614 - 6.8k (4822 053 11682) in chopper driver coupling circuit. | ||
| PHILIPS |
GR1AX
|
Power supply not working. | Check d6610 for short-circuit (bzx79-c10; 4822 130 61219). | ||
| PHILIPS |
GR1AX
|
Power supply faultfinding | Power supply faultfinding ------------------------- the power supply in the gr1-ax delivers approximately 33 watts on the +95v line to run the set. clearly the practice of using a 60 watt 240v lamp as a load during fault finding cannot be applied in this | ||
| PHILIPS |
GR1AX
|
Power supply does not oscillate. | Check c2613 (33nf; 4822 121 42489) on leakage. | ||
| PHILIPS |
GR1AX
|
Poor reproduction of copy protected tapes | It is possible that reproduction of some vcr tapes will be adversely affected by anti copy signals which are recorded on the video tape during the sync. period. a significant improvement can be achieved by applying the following modification: position | ||
| PHILIPS |
GR1AX
|
Poor line sync | C2501 ( 10uf ) | ||
| PHILIPS |
GR1AX
|
Poor h.t regulation and intermittent over voltage tripping. | D6629 (bzx79-b6v2; 4822 130 34167). | ||
| PHILIPS |
GR1AX
|
Picture fails for a short time. | Diode 6542 (byd33d) dry joint. | ||
| PHILIPS |
GR1AX
|
Pic & sound int blank out esp on chan change | Ic7470 tda2579b/n1 timebase chip | ||
| PHILIPS |
GR1AX
|
Osd-display is black and white. | Check/replace d6761 (1n4148; 4822 130 30621). | ||
| PHILIPS |
GR1AX
|
No vis , blank unmodulated raster | C2045 ( 22nf ) ceramic cap leaky | ||
| PHILIPS |
GR1AX
|
No tuning volts | Check r3703 o/c | ||
| PHILIPS |
GR1AX
|
No tuning | R3703 oc | ||
| PHILIPS |
GR1AX
|
No sound/pic 95v ht only 10v | Low res across +9 (10v) supply; was sound chip & d6613 byx79c15 zener leaky | ||
| PHILIPS |
GR1AX
|
No sound/pic - just blank screen | C2044 4µ s/c | ||
| 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 | ||
| PHILIPS |
GR1AX
|
No sound or vision - low humming | Loptx leak between windings 6-10 & 8-9 |