Philips Repair Tips
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Results: 14210
Results: 14210
| Make | Model | Symptom | Problem | Solution | By |
|---|---|---|---|---|---|
| PHILIPS |
G90AE
|
Shut down aft 10 mins with ht low at 30v | Tr7652 bc557c - check it with freezer | ||
| PHILIPS |
G90AE
|
Set intermittently tripping. | Suspect fault around trip circuit comprising t7655/7656. replace zener diodes 6657, 6658, 6659 and especially 6655 - 15 volt zener. | ||
| PHILIPS |
G90AE
|
Set dead works if supply reduced to 90v | D6653 | ||
| PHILIPS |
G90AE
|
Set blocks | Voltage on i2c-bus (pin 5 and 6 ic 7720) < 4,9 v no pulses visible on oscilloscope when selecting another program replace ic 7770 (st24c02cp; 4822 209 62098). mount metal shielding 4822 466 82783 on up (ic 7720) with earth to jumper 9711. | ||
| PHILIPS |
G90AE
|
Servicing the philips g90ae chassis | See tv mag jan 1997 | ||
| PHILIPS |
G90AE
|
Replacing the earom | Replacing the earom.the memory ic has been replaced by type st24c02cp (code no.4822 209 62098). on some receivers however, the circuit will have to be modified. a. if the st24c02cp is being fitted in place of an x2402 no circuit changes will be required | ||
| PHILIPS |
G90AE
|
Remote control inoperative - dark picture. | Replace ic 7720. | ||
| PHILIPS |
G90AE
|
Reduced height , top foldover | R3508 24k high | ||
| PHILIPS |
G90AE
|
Ragged verts | C2630 47µ ht res cap leaky | ||
| PHILIPS |
G90AE
|
Ragged verticals on some pictures. | C2630 ( 47uf ) ht reservoir con. | ||
| PHILIPS |
G90AE
|
Ragged pic, dim display | C2640 680µ 22v smoother, c2580 470µ 12v smoother | ||
| PHILIPS |
G90AE
|
Pulsing/rolling/jagged white line at top of screen | Ic7470 tda2579 timebase chip | ||
| PHILIPS |
G90AE
|
Psu pulsing with led flashing in time | Ht o/p only 80/90v when lop dis'd (should be 95v) - check soldering of sm comps on psu sec | ||
| PHILIPS |
G90AE
|
Power supply failure | In the event of a failure in the switch-mode power supply, the switching transistor ic7625 may have failed. in this case it is recommended that the opto-coupler ic7614 should also be replaced. 7625: but11af; 4822 130 42679 7614: cnx83a; 4822 130 82034 | ||
| PHILIPS |
G90AE
|
Popping from spkrs only at sw on | C2630/31 smoothing caps 47µ 250v | ||
| PHILIPS |
G90AE
|
Poor contrast range | C2560 33nf leaky in beam current limiter cct | ||
| PHILIPS |
G90AE
|
Picture too dark | Voltage on pin 7 s 5545 (line transformer) < 3,2v replace c 2560 (33 nf; 4822 121 51385). | ||
| PHILIPS |
G90AE
|
Picture becomes dark from time to time, cannot be adjusted | Transistor 7869 (pmbt2369; 4822 209 73852) base not soldered. | ||
| PHILIPS |
G90AE
|
Pic goes dark after 2 hrs and no can change display shows f4 | Ic7720 faulty | ||
| PHILIPS |
G90AE
|
Over-voltage circuit active | Disconnect connector a5 and connect a bulb to +95 volt. bulb burns. check/replace ts7545 (but11af;4822 130 42679) and s5545 (line transformer; 4822 1040 10306) |