| Make | Model | Problem | Solution | Date |
| | | |
| Found: 1049
|
| Panasonic | TXW28R4 | St/by only LOPTr s/c (BU2508AXLB) | Replaced by 2SD1577LB for greater reliability | 14-09-04 |
| Panasonic | TXW28R4 | Trips to st/by int | C464 220nF had a 22nF cap fitted in error | 14-09-04 |
| Panasonic | TXW28R4DP | Sw off aft 15 secs - sound & pic ok | R558 120k by LOPTx fback from beam lim to prot cct | 14-09-04 |
| Panasonic | TXW28R4DP Euro4 | Blnk raster - no OSD | Microprocessor IC1101 part number SDA5450C48 (30 UKP +VAT). | 14-09-04 |
| Panasonic | TXW28R4DP Euro4 | No sigs - snow only on screen | leaky SMD transistor marked "BR" inside IF section of the tuner. I used MSB1218ART1 | 14-09-04 |
| Panasonic | TXW28R4DP Euro4 | Sound dist from lh speaker | sound processor IC2102 MSP3410D part number MSP3410DPOB4 | 14-09-04 |
| Panasonic | U1 | Dead | Q801 BU326 chopper tr faulty - checked ok on meter | 14-09-04 |
| Panasonic | U1 | Int field collapse | Dry joints Trs 454 & 455 | 14-09-04 |
| Panasonic | U1 | No colour - intermittent. | Intermittent customer colour control. | 14-09-04 |
| Panasonic | U1 | No raster - EHT ok. | D818. | 14-09-04 |
|
|
| Panasonic | U1 | Sound - no sound or raster. | R810. | 14-09-04 |
| Panasonic | U2 | Field collapse | Q403 (Darlington tr) 2SD837 - BD645 works | 14-09-04 |
| Panasonic | U2 | Frame - top foldover if adj A1 control. | Frame IC TDA1106. | 14-09-04 |
| Panasonic | U2 | Lines/interference on pic | C854 o/c | 14-09-04 |
| Panasonic | U2 | No brightness. | BU208. | 14-09-04 |
| Panasonic | U2 | No picture - CRT cut off. | 2x zeners 6.2v in regulator base cct. | 14-09-04 |
| Panasonic | U2 | Sound - level affected by contrast control. | C857 ( 47u f ) | 14-09-04 |
| Panasonic | U2 | Sqealing/line tearing/corrugated verts | C809 1µ 250v | 14-09-04 |
| Panasonic | U2 | Standby - stuck in standby. | PSU D852/3 , Q501 line drive transistor , LOPTX. | 14-09-04 |
| Panasonic | U2 | Standby - stuck in standby. | D552 ( TVSC2715M ) o/c. | 14-09-04 |
| Panasonic | U2 | Stuck in standby. | D852 or D853 ( BY298 ) leaky , BU208. | 14-09-04 |
| Panasonic | U2 | Width & Hight reduced. | C371 ( 100uf 240v ) in middle of board. | 14-09-04 |
| Panasonic | U3 | Comes on in standby if on/off switch is used. | Relay RY1001 carbonised contacts. | 14-09-04 |
| Panasonic | U3 | Field - 1/2 pic | Q402 2SD856 - used TIP41C | 14-09-04 |
| Panasonic | U3 | Field collapse | Replaced field o/p trs but ran hot - D407 1N4148 o/c | 14-09-04 |
| Panasonic | U3 | Trips to st/by aft 1 sec | HT smoother C808 220µ 400v | 14-09-04 |
| Panasonic | U3 | Whistles/Screeches at sw on with black lines | C809 1µ 350v, C853 100µ 250v | 14-09-04 |
| Panasonic | U3 | whistling & ringing verts | C853 100µ 250v | 14-09-04 |
| Panasonic | U3W | Channels - difficulty selecting channels. | IC TMS3452N2L. | 14-09-04 |
| Panasonic | U3W | Channels - not storing channels. | IC TMS3452N2L. | 14-09-04 |