| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| 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 aft 2hrs & no chan 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) | ||
| Philips | G90AE | Oscillation wide in weak field on the right side. | It moves to the left and disappears after the set has warmed. Check/replace transistor 7533 (BC636; 4822 130 44283) in east-west circuit. | ||
| Philips | G90AE | No vertical deflection | No vertical control signal on pin 1 IC 7470 Replace IC 7470 (TDA 2579/N6; 4822 209 72363) Replace D 6465 (BAS 32L; 4822 130 80446) | ||
| Philips | G90AE | No Txt & "F7" in display with sound possibly missing | C2843 220µ |