Philips Repair Tips
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Results: 14210
Results: 14210
| Make | Model | Symptom | Problem | Solution | By |
|---|---|---|---|---|---|
| PHILIPS |
GFL2.20E 29PT828C
|
Dead | R3528 39k o/c | ||
| PHILIPS |
GFL2.20
|
Dead - mains switch faulty | Replace switch with improved type (coloured black). use old part no, philips will supply a new type | ||
| PHILIPS |
G90B
|
Vertical stripes on the left side. | Check capacitor c2580 (470 uf; 4822 124 40198). | ||
| PHILIPS |
G90B
|
Txt has too low contrast | Remove diode 6813 (bzv55-c7v5) from textdecoder unit 1996. | ||
| PHILIPS |
G90B
|
Txt - dist characters/excess contrast/crushed/no col | Dry joints on daughter board between main pcb & txt/nicam panels | ||
| PHILIPS |
G90B
|
Tuning unstable | In some instances it may be found that customers complain of tuning drift on the g90 chassis. this has been found to be due to a specific batch of zener diodes fitted in position d6770 becoming faulty. when replacing this diode the same type (ztk33b code | ||
| PHILIPS |
G90B
|
Tuning unstable | Voltage on d 6004 (llz-c35) fixed replace u 1000 (uv 816; 4822 210 10365) | ||
| PHILIPS |
G90B
|
Trips violently | Tr7652 bc858c overheating in opto coupler drive cct - tr leaky | ||
| PHILIPS |
G90B
|
St/by only | Eeprom 20c02 | ||
| PHILIPS |
G90B
|
Spare part information | Spare part information the original tda8153 (4822 209 73218), on the picture tube panel, is not available anymore a re-disigned complete picture tube panel with discrete components is available now with codenumber: 4822 212 22979. this panel is supplie | ||
| PHILIPS |
G90B
|
Sound slow to come on & no txt | C2846 220µ | ||
| PHILIPS |
G90B
|
Sound mutes spontanuously | Mount two capacitors of 100 nf (5322 121 42578; in parallel) between pin 10 ic 7220 (stereo decoder) and earth. | ||
| PHILIPS |
G90B
|
Slow start, led blinking in stand-by mode | Tr7455 (bc858a; 5322 130 42012) interrupts from time to time. | ||
| PHILIPS |
G90B
|
Severel patterning apparent on the picture. | If the pattern is also apparent in teletext mode and external mode, suspect decoupling fault from sops. scope on c2660 - 8 volt feed to 5 volt regulator. if ripple is apparent replace c2660 - 680 uf codenr. 4822 124 40199 or 1500 uf codenr. 4822 124 404 | ||
| PHILIPS |
G90B
|
Set blocked; no control of functions. | Check solder joints of resonator 1760. | ||
| PHILIPS |
G90B
|
Remote - faulty hand unit - its glued. | Remove name plate strip drill hole 1cm in from recess. | ||
| PHILIPS |
G90B
|
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 |
G90B
|
Page 811 appears spontanuously | Decoder selects page 811 and blocks mount new up (ic 7800) mab 8461p/w196 (4822 209 62479) on txt-decoder. | ||
| PHILIPS |
G90B
|
No vertical deflection | Vertical signal on pin 1 ic 7470 present check/replace ts 7502 (bd 939f; 4822 130 42681) check/replace ts 7503 (bd 939f; 4822 130 42681) | ||
| PHILIPS |
G90B
|
No vertical deflection | +200 v(163) not present replace r 3570 (8,2Ω; 4822 052 10828) |