| Make | Model | Problem | Solution | Added | Date |
| | | | |
| Found: 4551 |
| Philips | 3A | Dead or lines in the upper part of the screen. | Replace fuse 1642 (1 A) with 1,25 A (order code 4822 253 10075) in
33" sets that has NICAM and PIP.
| plamensl | 14-09-2004 |
| Philips | 3A | Dead. | F1601 EW feed 315Ma o/c. | plamensl | 14-09-2004 |
| Philips | 3A | Display jumps from channel to channel. | Flat cable of keyboard unit is defective.
| plamensl | 14-09-2004 |
| Philips | 3A | Does not function (Stand-by LED and Crispening LED blink both) | Replace C2618 (1,5 nF; 4822 126 12274)
| plamensl | 14-09-2004 |
| Philips | 3A | East/west defective. | Check D 6610 (BYW 95C; 4822 130 41602)
| plamensl | 14-09-2004 |
| Philips | 3A | Entering service mode | Press mono button on front of set & sleep timer/print on R/c. 4 dashes appear, 1st 2 digits is parameter, 2nd 2 is value. | plamensl | 14-09-2004 |
| Philips | 3A | Flashing on picture (flasher confirming a video output fault) | Solder dry joints on CRT base PWB, replace CRT base socket and
clean CRT pins.
| plamensl | 14-09-2004 |
| Philips | 3A | Goes into Standby/Protection | Check Transistor 7731 (BC566) for E/C short circuit (4822 130 40989).
| plamensl | 14-09-2004 |
| Philips | 3A | Hum on standby | Build in modification 4822 212 23273
(Mounting-instructions are included)
| plamensl | 14-09-2004 |
| Philips | 3A | In VHF frequencies only noise. | Defective channel selector.
| plamensl | 14-09-2004 |
| 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)
| plamensl | 14-09-2004 |
| Philips | 3A | No NICAM sound | 7201 defective (4822 209 61114).
| plamensl | 14-09-2004 |
| 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).
| plamensl | 14-09-2004 |
| 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) | plamensl | 14-09-2004 |
| Philips | 3A | No picture, Audio OK. (Picture OK via SCART) | Check U1018 (IF module Europe:4822 212 22439)
(IF module France:4822 210 10295)
| plamensl | 14-09-2004 |
| Philips | 3A | No picture. | TDA4580 US | plamensl | 14-09-2004 |
| 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)
| plamensl | 14-09-2004 |
| Philips | 3A | No synchronization | Check U 1018 (IF module Europe:4822 212 22439)
(IF module France:4822 210 10295)
| plamensl | 14-09-2004 |
| 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 | plamensl | 14-09-2004 |
| 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)
| plamensl | 14-09-2004 |