| Make | Model | Problem | Solution | Date |
| | | |
| Found: 4551
|
| Philips | GR1AX | Dead - HT at 8v | R3613 120k in startup fet cct hi res | 14-09-04 |
| Philips | GR1AX | Dead - HT ok - no lop activity | L5224 supply to line dr discoloured & o/c | 14-09-04 |
| Philips | GR1AX | Dead - LOPTr s/c & replacement lasted 5 mins | Line drive wfm dist - L5519 3µ3 in series with o/p from line timebase chip shorted turns | 14-09-04 |
| Philips | GR1AX | Dead - low o/p from psu | R3610 & R3613 faulty - caused by D6610 zener in FET gate faulty | 14-09-04 |
| Philips | GR1AX | Dead - no 95v from PSU. | D6638 ( BZX79-B36 ) s/c. | 14-09-04 |
| Philips | GR1AX | Dead - no line osc | D6030 12v zener o/c | 14-09-04 |
| Philips | GR1AX | Dead - pri HT only | Loptx o/c winding 1/5 | 14-09-04 |
| Philips | GR1AX | Dead - psu not starting HT = 15v | D6613 15v zener - checked ok out of cct | 14-09-04 |
| Philips | GR1AX | Dead - psu shutdown | s/c between pins 1 & 6 of Loptx - replaced | 14-09-04 |
| Philips | GR1AX | Dead - tripped due to high HT | R3610 330k in psu hi res | 14-09-04 |
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| Philips | GR1AX | DEAD , NO LINE OSC. | Check C2519 ( 150pF ) pin 26 TDA8305 Check D6030 12v ZENER & D6523 | 14-09-04 |
| Philips | GR1AX | DEAD 95v RAIL AT 5v | D6671 4v3 US | 14-09-04 |
| Philips | GR1AX | DEAD LOP TRANSISTOR SC REPLACEMENT BLOWS AFTER 5mi | L5519 ( LINE DRIVE ) OR LOPTX | 14-09-04 |
| Philips | GR1AX | Dead set - psu OK | Micro not working but replacement didn't cure - unplug Txt panel got set working - IC7880 PCA84C81AP/098 u/s | 14-09-04 |
| Philips | GR1AX | Dead with burning smell | BUT11AF lop tr & dry joints scan coil connector etc | 14-09-04 |
| Philips | GR1AX | Dead with HT only 1.5v & PSU whistles | Replace 6641 SF2D41 protection thyristor | 14-09-04 |
| Philips | GR1AX | DEAD WITH LED FLASHING AFTER A FEW SECS | IF NOT LOPT , MAY BE D6613 15v ZENER | 14-09-04 |
| Philips | GR1AX | Dead with low freq sound | 95v HT ok but 9v start up only 5v - Loptx faulty FAT30057 | 14-09-04 |
| Philips | GR1AX | Dead with slight hum - 95v HT at LOPTr | L5524 coil o/c in line dr stage | 14-09-04 |
| Philips | GR1AX | Dead with st/by light flashing - PSU OK | No line drive or start up volts pin 16 TDA2579 timebase gen - R3455 1k safety feed res high res | 14-09-04 |
| Philips | GR1AX | Dead. | D6610 ( BZX79C10 ) zener. | 14-09-04 |
| Philips | GR1AX | Dim pic with hanover bars - no sndcl pulses | D6326 BZX79C12 s/c | 14-09-04 |
| Philips | GR1AX | DIM PICTURE LINES ON COLOUR | D6326 12v ZENER | 14-09-04 |
| Philips | GR1AX | During picture changes sometimes a volume increase (plop) is heard. | Replace bridge-wire (/jumper) 9511 by diode 6031 BZX79-C12,
(4822 130 34197), section/location F7, page 8, of chassis
GR1-AX 20" (4822 727 18093).
Add diode 6032 BZX79-C12, (4822 130 34197), section/location G7 of
the chassis lay-out.
NOTE | 14-09-04 |
| Philips | GR1AX | Excess non lin height & part pic blanked - int | C2043 82pF int | 14-09-04 |
| Philips | GR1AX | EXCESSIVE HEIGHT , LIN FAULTY , FIELD BLANKING | C2043 82pf | 14-09-04 |
| Philips | GR1AX | fails to stop at station when tuning | L5045 o/c | 14-09-04 |
| Philips | GR1AX | Failures in the power supply | In the event of a failure in either R3616, R3680, R3614, MOSFET
7610 or D6610, it is recommended that all four components should be
replaced. During fault finding do not connect any probe to the
gate of the MOSFET 7610 to measure voltages and waveforms a | 14-09-04 |
| Philips | GR1AX | Faulty functions with remote control RC 5701. | Battery spring does not contact Philips alkale battery.
Change remote control.
REMARKS :
The spring has been changed in production from week 9212 onwards.
| 14-09-04 |
| Philips | GR1AX | Faulty functions with remote control RC 5701. | Battery spring does not contact Philips alkale battery.
Change remote control.
REMARKS :
The spring has been changed in production from week 9212 onwards.
| 14-09-04 |