| Make | Model | Problem | Solution | Date |
| | | |
| Found: 4551
|
| Philips | L6.2 | Dead - LOPtr Tr7906 runs hot & fails (piv OK) | L5420 in line drive cct o/c | 14-09-04 |
| Philips | L6.2 | Dead - off with bang | Fit PSU kit ES7062 , opto 7420 & L5420 - check for dry joints on R3513 330k | 14-09-04 |
| Philips | L6.2 | Dead apart from buzz from psu | F1502 o/c, D6503 BYD33D s/c, no line drive now, opto IC7420 u/s | 14-09-04 |
| Philips | L6.2 | Dead with faint whistle - LED lit | F1502 63mA in PSU sec o/c | 14-09-04 |
| Philips | L6.2 | Dead with faint whistle - no LED | Tr7505 BC337-40 | 14-09-04 |
| Philips | L6.2 | Destruction of T7906 and Coil L5420. | Replace T7906 (=4822 130 10864) and Coil L5420 (=4822 157 50965) also
replace D6108 from 6V8 to 7V5 (=4822 130 30861).
REMARKS :
In case of repetitive failure check/replace line transformer 5422
(4822 140 10623)
- test insulation between primary and s | 14-09-04 |
| Philips | L6.2 | Hotel mode | Hotel mode
----------
Only mono sets of L6.2 chassis have hotel mode possibility!
To activate this mode do the following:
- select channel 38
- push vol- and vol + on the TV set AND OSD on the remote control
simultaneously.
- you now enter the hotel mo | 14-09-04 |
| Philips | L6.2 | How to activate/de-activate "Hotel mode" | Only mono sets of L6.2 chassis have hotel mode possibility!
To activate this mode do the following:
- select channel 38
- push vol- and vol + on the TV set AND OSD on the remote control
simultaneously.
- you now enter the hotel mode.
To leave the hote | 14-09-04 |
| Philips | L6.2 | Hum, or sound varying depending from picture contents | In sets with a modified antiplop circuit, a capacitor 47uf is mounted
between pin 1,7 and 6 IC7205. In that case check if R3206 (4k7) and
R3217 (22k) have the correct values and not reverse.
| 14-09-04 |
| Philips | L6.2 | Int functs & tuning loss | 5v supply to micro low; 7505 BC548B leaky | 14-09-04 |
|
|
| Philips | L6.2 | Int narrow raster with squeal | BC338-40 in 5/9v supply | 14-09-04 |
| Philips | L6.2 | Int various - pic size, no sound & off | R3509 47k in psu o/c | 14-09-04 |
| Philips | L6.2 | Lack of width/ E/W dist after fitting repair kit | TR7908 STP4NA40F1 s/c between gate and source junctions | 14-09-04 |
| Philips | L6.2 | Line transitor T7906 on deflection module (repeated) defective. | Before replacement of T7906 (4822 130 10864) also check L5420 for
damage or interruption (take care there is R3424, 47E parallel).
Codenumber L5420, 4822 157 50965. Check if D6108 is BZX79-C7V5,
otherwise replace it by that value, codenr. 4822 130 30861.
| 14-09-04 |
| Philips | L6.2 | Loss of picture carrier or frequency drift | Change R3420 (see diagram A1) from 12k to 18K (service code 4822 116 52251) | 14-09-04 |
| Philips | L6.2 | No E/W or width control | C2915 390n | 14-09-04 |
| Philips | L6.2 | No more deflection because 25 Volt missing on 110 degrees module. | Change on 110 degrees module D6907 to BYV27-400; service codenumber
4822 130 70055.
IRIS code 1 3 1 6.
REMARKS :
teletext version only !
| 14-09-04 |
| Philips | L6.2 | No more deflection or E/W failure in 110 degrees module | Change D6906 to BY278-20; service code number 4822 130 11369.
REMARKS :
Only for 110 degrees module
| 14-09-04 |
| Philips | L6.2 | No picture. Storing presets not possible. Very slow control with R.C. | Check MSP3400 (IC 7221 on audio module)
| 14-09-04 |
| Philips | L6.2 | No Teletext if set is switched on from standby position | Check and replace if necessary the components C2604, C2606 and R3633.
REMARKS : The tolerances of above components can be out of range.
IRIS CODE : 231X | 14-09-04 |
| Philips | L6.2 | No TXT. No wide screen. All options are "N". | Check soldering of pin 6 (SCL signal) on connector 065 audio module.
Resolder all the pins on this connector.
| 14-09-04 |
| Philips | L6.2 | Noise on one channel, wrong stereo indication | Noise on one channel, or stereo indication while transmission is mono
(or with NICAM reception).
On audio module, change IC7353 to MSP3400C-C6 (4822 209 13099)
| 14-09-04 |
| Philips | L6.2 | One horizontal line after warmup. | Check on 110 degr. Module D6906 for short circuit.
If D6906 is short-circuited, also check other components around D6906.
D6906 (BY228; 4822 130 41275).
T7908 (ST4NA40F1; 4822 130 63725).
| 14-09-04 |
| Philips | L6.2 | Only hor. line in middle of picture. No vert.deflection. | Check/replace capacitor C2136 (100nF)
| 14-09-04 |
| Philips | L6.2 | Only horizontal bar. | Bent top of R3908 away from spring of T7904.
| 14-09-04 |
| Philips | L6.2 | Only horizontal line, no vertical deflection. | 1) check on 110 degr. module if 25V is present on C2916.
If not present, probably D6907 is in short circuit and/or R3928
open. Change D6907 into BYV27-400 codenumber 4822 130 70055.
R3928, 1 Ohm, codenr. 4822 052 11108.
2) check if R3908 does n | 14-09-04 |
| Philips | L6.2 | Only horizontal white stripe on screen. No vertical deflection. | Check T7904, T7905 and R3908 on deflection module.
| 14-09-04 |
| Philips | L6.2 | Only standby LED on, no high tension | Check +150, this has to be around 150V.
145V is too low and then there is no 5V for the microprocessor.
Check R3509 and D6501
Replace R3509 by 47k 1 Watt version (4822 053 10473)
D6501 is BZX79B5V6 (4822 130 34173)
| 14-09-04 |
| Philips | L6.2 | remote & local controls would lock up after the set had been on for 30 minutes | Change T7505 and T7500. The BC337 should be a /25 or /40 version. They are in the 5 volts supply to the uP. | 14-09-04 |
| Philips | L6.2 | Set does not start up if mainsvoltage is below 210 Volts. | Change resistor R3509 in circuit diagram A1 from 47K 0.5 W to 47K 1W.
Service codenumber 47K 1 Watt: 4822 053 10473.
REMARKS :
iris code 1 1 1 9 | 14-09-04 |