| Make | Model | Problem | Solution | Date |
| | | |
| Found: 4551
|
| Philips | 3A | No 140 V | Remove audio output stage (PAS) U1003, +140 Volt is present.
Replace IC7200, IC7210 (TDA1514/N4; 4822 209 70938).
Also mount 2 diodes P4KE30C700 (4822 209 73095) in parallel
to C2228 and C2229 (polarity is not important)
| 14-09-04 |
| Philips | 3A | No NICAM sound | 7201 defective (4822 209 61114).
| 14-09-04 |
| Philips | 3A | No picture nor sound, power supply whistles. | In pin 2 of transformer 5620 resistors 2,7 Ohm broken (not men-
tioned in the Service Manual).
| 14-09-04 |
| Philips | 3A | No picture, audio OK (+26 V on pin 9 IC7552 present) | Signal on pin 5 IC7552 not present.
Check C2569 and IC7552 (TDA3654Q; 4822 209 73308) | 14-09-04 |
| Philips | 3A | No picture, Audio OK. (Picture OK via SCART) | Check U1018 (IF module Europe:4822 212 22439)
(IF module France:4822 210 10295)
| 14-09-04 |
| Philips | 3A | No picture. | TDA4580 US | 14-09-04 |
| Philips | 3A | No sound, picture OK (Sound OK via headphones) | Replace IC 7200, IC 7210 (TDA 1514/N4; 4822 209 70938)
Also mount 2 diodes P4KE30C700 (4822 209 73095) in parallel
to C 2228 and C 2229. (Polarity is not important)
| 14-09-04 |
| Philips | 3A | No synchronization | Check U 1018 (IF module Europe:4822 212 22439)
(IF module France:4822 210 10295)
| 14-09-04 |
| Philips | 3A | Rating of fuse 1642 | Rating of fuse 1642
-------------------
The following production change has been introduced in versions of
the 3A chassis which include both NICAM sound and
picture-in-picture (PIP).
The value of fuse 1642 has been increased from T800m/A to T1.25A
code n | 14-09-04 |
| Philips | 3A | Set cannot be switched from Stand-by | Voltage 7,5 volt from SOPS is too high.
C2681 (22 uF/35 volt 4822 124 21932 on the primary side)
| 14-09-04 |
|
|
| Philips | 3A | SET DEAD PROTECTION THYRISTOR OPERATING | F1601 315mA OC | 14-09-04 |
| Philips | 3A | Sometimes no sound, no picture | Check soldering points of SOPS-transformer and line-transformer
| 14-09-04 |
| Philips | 3A | Sometimes no sound, no picture (+13 V on pin 27 U 1018) present. | Picture and sound OK via SCART.
Check U 1018 (IF module Europe:4822 212 22439)
(IF module France:4822 210 10295)
| 14-09-04 |
| Philips | 3A | Sound - no NICAM standard sound ok. | IC7201 on Nicam PCB. | 14-09-04 |
| Philips | 3A | Spare part information | Spare part information
----------------------
Keyboards 4822 212 23132 and 4822 212 22765.
Only folio is supplied. Use the old case.
| 14-09-04 |
| Philips | 3A | Spare part information | Spare part information
----------------------
The picture tube of the 17" 3A sets (A41EAM00X03) is now
available with service code number 4822 131 20552.
| 14-09-04 |
| Philips | 3A | Spare part information | Spare part information
----------------------
For the keyboard assemblies 4822 212 23132 and 4822 212 22765 only
the foil is delivered, without the plastic housing (see service
information HE92-06 dd 11-05-92). The separate plastic housing
is now also | 14-09-04 |
| Philips | 3A | St/by only | C2681 22µ 35v at front corner of pcb near chopper | 14-09-04 |
| Philips | 3A | Text, clock and ODS do not work. | If the memory has been changed be sure that the option is correct.
| 14-09-04 |
| Philips | 3A | Tuning unstable | Check U1018 (IF module Europe:4822 212 22439)
(IF module France:4822 210 10295)
| 14-09-04 |
| Philips | 3A | Unacceptable long heating time of older picture tubes. | Add a diode 1N4148 (4822 130 30621) in serial with diode 6492.
This will not effect the lifetime of the picture tube or the set.
It prevents that the video controller mutes the picture untill the
3 guns are within the same range of emission.
| 14-09-04 |
| Philips | 3A | Unacceptable long heating time of older picture tubes. | Add a diode 1N4148 (4822 130 30621) in serial with diode 6492.
This will not effect the lifetime of the picture tube or the set.
It prevents that the video controller mutes the picture untill the
3 guns are within the same range of emission.
| 14-09-04 |
| Philips | 3D | 140V OK and via SCART OK | Replace U1018 (4822 212 22439)
| 14-09-04 |
| Philips | 3D | Brightness too high/fly-back line visible | Check U 1555 (digital PCB; 4822 212 22585)
| 14-09-04 |
| Philips | 3D | Characters wrong | Check U 1555 (digital PCB; 4822 212 22585)
| 14-09-04 |
| Philips | 3D | Moire on channel 5 (175 MHz) | Apply HF-shielded antenna-cable (from wall-contact across VCR to
CTV) or use special antenna-cable 4822 321 61225
| 14-09-04 |
| Philips | 3D | No 140 V | Remove audio output stage (PAS) U1003, +140 Volt is present.
Replace IC7200, IC7210 (TDA1514/N4; 4822 209 70938).
Also mount 2 diodes P4KE30C700 (4822 209 73095) in parallel
to C2228 and C2229 (polarity is not important)
| 14-09-04 |
| Philips | 3D | No 140 V | Remove connector M17; voltage + 140 Volt is present.
Replace TS7618 (2SD1577PH; 4822 130 43921)
| 14-09-04 |
| Philips | 3D | No picture. After using TXT picture O.K. | RGB switch in wrong position (external switch)
| 14-09-04 |
| Philips | 3D | Sometimes no synchronization | Replace IC 7280 (DPU 2540; 4822 209 72138) on U 1555
| 14-09-04 |