philips MD2.25 Repair Tips
Search: MD2.25 philips
Results 15
Results 15
| Make | Model Ch. | Symptom | Problem Solution | Solution | By: |
|---|---|---|---|---|---|
| Philips | MD2.25E 32PW9543/05 | Poor definition | Tr7140 BD140 on crt base s/c | ||
| Philips | MD2.25E | Noise (humming or low frequency whistle) coming from the picture tube | Mount bleeder (4822 310 11113) between LOT and picture tube. If problem still exist Anti Crackling Coating (ACC) can be applied. The code number for this ACC is 4822 390 10166. The ACC is supplied with complete instructions how to apply. REMARKS | ||
| Philips | MD2.25E | No sound from left, right, centre and subwoofer speakers | Check on audio supply panel (AB, page 39) 7302, BU508AF, 4822 130 61265 3300, 6E8 5W, 4822 117 12681 If one or both are defective also check production code on transformer 5305. If production code on 5305 is between or equal to OP9802 and OP9824 then al | ||
| Philips | MD2.25E | Influence from wireless dolby on channel 3 | Cause: The wireless dolby transmitter influences the 55.25 MHz on channel 3. The local oscillator from the tuner interferes with the wireless dolby transmitter frequency and this results in a cross pattern on channel 3 (55.25 MHz). Solution: - Add on pos | ||
| Philips | MD2.25E | E/W distortion and then switching to standby | Check and replace if necessary position 7480 on the Large Signal Panel with IRF620FI (4822 130 63546). REMARKS : Introduced in production (25" and 29") in week 9912. IRIS symptom code: 233A | ||
| Philips | MD2.25E | Curtain effect just after a white vertical line (ringing phenomenon) | To reduce the ringing phenomenon change the following positions on the Small Signal Panel: Position 4508 into 1k (4822 051 10102) Position 3537 into 1k (5322 117 12487) Position 3538 into 1k (5322 117 12487) Position 3565 into 1k (4822 051 10102) Po | ||
| Philips | MD2.25E | Crackling noise coming from the picture tube | Crackling noise coming from the picture tube during light/dark changes of the picture contents. Mount bleeder (4822 310 11113) between LOT and picture tube. If problem still exist Anti Crackling Coating (ACC) can be applied. The code number for this AC | ||
| Philips | MD2.25E | Correction to position 21 of styling 220 | Correction to position 21 of styling 220 of Product Survey 1999-3 (3122 785 10300 The code numbers mentioned for the aluminium columns at position 21 of styling 220 are not correct. The correct code numbers must be: 21 4822 466 12216 Aluminium colum | ||
| Philips | MD2.25E | Codenumber information | Codenumber information ---------------------- Long cable SSP <> CRT panel: 4822 320 11291. Set extention cables: 4822 310 11188. The extention cables are different from MD2.22E because use of other connectors. | ||
| Philips | MD2.25 32PW9523/25 | Width shrinks & reverts to st/by on bright scenes | Current sense resistors R3546, R3547 0R39 in PSU had gone slightly high in value | ||
| Philips | MD2.25 32PW9523 | excessive width with E/W | IC7480 (482213011336) EW chip | ||
| Philips | MD2.25 29PT8413 | Trips int leaving no sound/pic & st/by LED flashing cont. | due to oxidised connections on the audio board pins - looked ok but resoldering cured | ||
| Philips | MD2.25 | dead - mains switch faulty | replace switch with improved type (coloured black). Use old part no, Philips will supply a new type | ||
| Philips | MD2.25 | No sound - fault in separate sound psu | Tr7302 BU508AF s/c, R3300 6R8 o/c s/c on 16v line traced to AF o/p ic 7740 s/c | ||
| Philips | 32PW9763/05 MD2.25E | St/by only with led flashing | Main micro on control board pin 53 stuck hi due to D6227 zener 3v3 sm o/c. For more info see TV mag Nov 2001 |