| Make | Model | Problem | Solution | Date |
| | | |
| Found: 4551
|
| Philips | L6.2 | Set switches to STEREO during MONO transmission | Check and replace if necessary IC7221 on the Nicam module by the
MSP3410-D (4822 209 15832).
REMARKS :
This solution will be implemented in production from week 9742
onwards.
| 14-09-04 |
| Philips | L6.2 | Set totally inoperative. Squeaking sound. | Check C2915 on deflection module.
| 14-09-04 |
| Philips | L6.2 | Sometimes hang-up of set; only teletext version ! | Change pos 7505 to BC337-40, service codenumber 4822 130 41344.
See diagram A1, power supply. (pos 3500 is already 470 Ohm in L6.2)
IRIS code 2 1 1 X.
REMARKS :
Only teletext version
| 14-09-04 |
| Philips | L6.2 | Sometimes loud noise out of speakers. | Check memory IC7605.
| 14-09-04 |
| Philips | L6.2 | St/by light glows dimly only | fuse 1502 630mA o/c, then no field scan, 3928 1R res o/c, then bright raster due to no 160v line, R3429 2R2 fusible from LOPTx o/c | 14-09-04 |
| Philips | L6.2 | The set does not work anymore after switching it into the standby mode | Replace the line output transistor 7906. Also replace the line output
driver transistor 7421 by type BC368-25 (use only a Philips version)
The service code of BC368-25 is 933869720112.
REMARKS :
The cause is that the line output transistor 7906 | 14-09-04 |
| Philips | L6.2 | Width control inop | TR7908 STP4NA40F1 s/c between gate & source | 14-09-04 |
| Philips | L6.2 | Width/ E/W dist | C2915 390nF o/c | 14-09-04 |
| Philips | L6.2 | noise on one channel or stereo indication on mono transmission | replace IC7353 MSP3400C (482220913099) | 14-09-04 |
| Philips | L6.2 21PT1653 | dead, chopper Tr s/c | R3524 22R gone high | 14-09-04 |
|
|
| Philips | L6.2 25PT4103 | Dead with smoke | C2912 2n2 2kv split but no pic with buzzing when replaced - works on 200v ac - check R3514/5 1R ?w current sensing res in psu | 14-09-04 |
| Philips | L6.2 25PT4103 | Int dead apart from buzz or lines/disturbance | Transistor 7501 BF487 | 14-09-04 |
| Philips | L6.2 25PT4103 | Line & pulling moving up or down pic | 7501 BF487 in power supply. | 14-09-04 |
| Philips | L6.2 25PT4103 | Pulsing psu & EHT | R3425 12R in line dr o/c | 14-09-04 |
| Philips | L6.2 25PT4103/05 | Col fades out aft 10 mins then starts to trip | TDA8361 IC7100 pt no 4822 209 13047 | 14-09-04 |
| Philips | L6.2 25PT4494 | Shuts down aft a min with cogging - ok at restart | tr515 and choke 5428 | 14-09-04 |
| Philips | L6.2 286NS | Narrow, snowy raster with bright strip 2 inches wide down middle, no sound or r/c. | Replace transistor 7505 near chopper transformer BC337-40 which read high. | 14-09-04 |
| Philips | L6.2 AA | Dead with whine from psu | C2012 2n2 2Kv - cracked | 14-09-04 |
| Philips | L6.2 L6.3 | Chan lock up etc | Replace Tr7505 BC337-40 | 14-09-04 |
| Philips | L6.2/6.3 | Goes dead with no LED lit aft few mins | Tr 7505 BC337-40 replaced | 14-09-04 |
| Philips | L6.2AA | Dead - blown psu & s/c lop tr | caused by 5420 coil in loptr base o/c pt no 4822 157 50965 | 14-09-04 |
| Philips | L6.2AA | High HT | R3510 33k hi res | 14-09-04 |
| Philips | L6.2AA | Int dead | Transistor 7507 in PSU near chopper tfmr BC337-40 | 14-09-04 |
| Philips | L6.2AA | Line o/p Tr repeated failure | L5420 int o/c | 14-09-04 |
| Philips | L6.2AA | Repeated failure of loptr | caused by 5420 coil in loptr base o/c pt no 4822 157 50965 | 14-09-04 |
| Philips | L6.2AA | Squealing or Dead with lop tr s/c | L5420 15µH in 14v supply faulty | 14-09-04 |
| Philips | L6.2AA 25PT4103/05 | E/W correction | C2913 390nF o.c. also split and bulging | 14-09-04 |
| Philips | L6.3 | Codenumber information | Codenumber information
----------------------
Code number for L6.3 mainsswitch is :4822 212 11965 | 14-09-04 |
| Philips | L6.3 | Dead - LED not lit | 5v supply missing - check T7505 BC337-40 & T7500 BC858 sm (underneath T7505) | 14-09-04 |
| Philips | L6.3 | Dead - LOPTr 7906 BU1508AX faulty | Check L5420 in its base for o/c - if it is, new LOPTr will fail | 14-09-04 |