| Make | Model | Problem | Solution | Date |
| | | |
| Found: 1049
|
| Panasonic | Z4 | Flyback lines - over bright picture. | R380 ( 680k ) o/c not through PCB properly. | 14-09-04 |
| Panasonic | Z4 | INT CHROMA | C2651 INT OC ON BOARD C NEAR IC2651 ( CHROMA SWITCH IC ) | 14-09-04 |
| Panasonic | Z4 | Int failure to start | Check dry joints but LOPTr was responsible this time | 14-09-04 |
| Panasonic | Z4 | INT FIELD COLLAPSE | Check V at pin 2 IC451 if high replace C402 3.3mfd , BLUE TANT on C board | 14-09-04 |
| Panasonic | Z4 | Int no pic =- OSD ok | crack in print on video board between Q302 em & C302 | 14-09-04 |
| Panasonic | Z4 | Letter 'C' towards left centre of screen. | Reprograme microcomputer see Tv mag. | 14-09-04 |
| Panasonic | Z4 | Line osc running fast | AN5603K IC601 faulty | 14-09-04 |
| Panasonic | Z4 | No sound for 1st 1/2 hour pic shifted to one side | C503 ( 0.01uF ) | 14-09-04 |
| Panasonic | Z4 | NO SYNC ( CLOCK AND DATA LINES SHOW LOWER THAN NOR | MAB8461-PW216 TEXT CONTROL IC. - IC3507 | 14-09-04 |
| Panasonic | Z4 | NO VIDEO , FAINT LINES IN BACKGROUND | 180pf CAP PIN 14 , IC521 | 14-09-04 |
|
|
| Panasonic | Z4 | Over bright picture - with flyback lines. | R380 ( 680k ) o/c not through PCB properly. | 14-09-04 |
| Panasonic | Z4 | POWERS UP THEN GOES DEAD | CHECK Q558 , Q541 , Q542 | 14-09-04 |
| Panasonic | Z4 | set displays "C" in left Centre of screen | Micro req's reset Hold down VOL button on set while pressing TIMER but on Handset Should display colum of OK's & reset | 14-09-04 |
| Panasonic | Z4 | STATIONS TUNED TO ONE POSITION ALREADY HOLDING TU | CHECK AROUND TEXT PCB LINK J10 etc | 14-09-04 |
| Panasonic | Z4 | Stores one channel in all locations | EPROM (IC1202)24CO2AB1 | 14-09-04 |
| Panasonic | Z4 | Strange faults. | Reprograme microcomputer see Tv mag. | 14-09-04 |
| Panasonic | Z4 | SWITCHES ON BUT DIES | Q558 2SA879 | 14-09-04 |
| Panasonic | Z4 | TUNING DRIFT | TUNER UNIT | 14-09-04 |
| Panasonic | Z4 | TUNING DRIFT NO SOUND NO SOUND OSD | Q1272 3 4 OR MORE LIKELY C524 180pF | 14-09-04 |
| Panasonic | Z4 | Tuning drift - sound muted. | C524 ( 180pf ) leaky. | 14-09-04 |
| Panasonic | Z4 Chassis | Bright green at sw on & int cuts out | C350 on crt base | 14-09-04 |
| Panasonic | Z4 Chassis | Col int low or absent | C2651 0µ01 sm int o/c | 14-09-04 |
| Panasonic | Z4 Chassis | Comes on with field collapse - gradually opens up then int shuts down | C462 470pF ceramic cap leaky in FOP cct | 14-09-04 |
| Panasonic | Z4 Chassis | Dead - blank raster when optocoupler overidden | No activity from main micro - IC1202 EEPROM ST24C02A faulty | 14-09-04 |
| Panasonic | Z4 Chassis | Dead - surge lim res R802 4R7 5W o/c | STR54041M IC801 & Q801/2 s/c & D854 overvolts prot diode s/c. C809 0µ1feedback cap was the cause (caused excessive HT) also change C808 10µ 63v | 14-09-04 |
| Panasonic | Z4 Chassis | Dead after initial burst of life | Trips even with LOP stage dis'd - fault in prot cct - Q558 2SA879 faulty tho checked ok out of cct | 14-09-04 |
| Panasonic | Z4 Chassis | Field int collapses or rolls | C402 3µ3 tant cap in Field osc stage | 14-09-04 |
| Panasonic | Z4 Chassis | Int loss of sound | Check conns to speakers | 14-09-04 |
| Panasonic | Z4 Chassis | Letter "C" displayed towards left/centre of screen | Reset micro by pressing VOL- button on TV whilst pressing Timer button on Hset - Oks then displayed | 14-09-04 |
| Panasonic | Z4 Chassis | No sound and half a pic (shifted over) | C503 0µ01 cap across line shift control leaky | 14-09-04 |