panasonic Z7 Repair Tips
Search: Z7 panasonic
Results 20
Results 20
| Make | Model Ch. | Symptom | Problem Solution | Solution | By: |
|---|---|---|---|---|---|
| Panasonic | TC-21 S3R Z7 | Picture fades away few seconds after start-up till no picture. Sometimes no picture at all. Sometimes picture OK for longer. Sound unaffected. | Faulty joints on CRT pcb. Cracked solder joints at tube socket connections on CRT circuit board. Caused variable supply to CRT heaters. Resolder all socket pins to pcb. | ||
| Panasonic | Z7 TX21S3T | stuck in stby | EEPROM IC1205 (XL24C02PBAB) FAULTY, CHECK BY BYPASSING THE RELAY | ||
| Panasonic | Z7 TX21S3T | negative pic with AGC overload via tiner (OK via SCART) | FAULTY EPROM. BEFORE REPLACING ENTER SERVICE MODE AND WRITE DOWN EPROM VALUES.CHANGE IC AND ENTER ORIG.VALUES, YOU MUST ENTER "SHIPPING CONDITION AUTOTUNE" | ||
| Panasonic | Z7 TX21S3T | int. startup, int. blank raster, int. no remote operation | LOW SDA/SCL LINES, D307 BZY88C4V7 LEAKY | ||
| Panasonic | Z7 TX21S3T | goes to stby after 5-10 mins | D1208 MA170 LEAKY | ||
| Panasonic | Z7 TX21S3 | stuck in stby | NO 2.6V TO PIN 31 IC1201(Micro), R1218 O/C FUSIBLE 560K 0.5W PART NO. ERO50PKF5603 | ||
| Panasonic | Z7 TX21JT | Reverts to st/by after a couple of hrs & keeps cutting out when sw back on | EEPROM vots had dropped to 2.3v (5v) due to D1202 going o/c - check other diodes in EEPROM supply line also | ||
| Panasonic | Z7 TX14S3T | Wont find chans in chan search, those already tuned in are off tune & dist. Tall, flat & greyscale off in AV mode | eeprom Part number XL24CO20-AA cured the faults. Caused by dry joint on LOPTx earth tag corrupting EEPROM. Go into"self check" mode. Done by pressing Status button on the remote & V down on set. Shows OPT O2 on screen.Can't store PP until done | ||
| Panasonic | Z7 TX14S3 | distorted pic and sound, appears to have no sync | EPROM IC1205 (XL24D02PAA1) | ||
| Panasonic | Z7 TX14S3 | dead, stby LED is low | 5V STBY RAIL ONLY 2V, D1202 O/C (1N4150T77) | ||
| Panasonic | Z7 TX14S3 | blank raster, sound OK | R560 300K O/C | ||
| Panasonic | Z7 TC21S3R | switched to 16:9 mode | CORRUPT EEPROM (NO OPTION CODE) , REPLACE MICRO IC1201 AND EAROM IC1205, INITIALISE BY PRESSING STATUS KEY ON REMOTE, FOLLOWED BY 'V' BUTTON ON TV | ||
| Panasonic | Z7 TC14S3R/T | stuck in stby | MICRO IC1201 IN PROTECT DUE TO NO +2.6V ON PIN31, R1218 620K 0.5W O/C | ||
| Panasonic | Z7 TC14S3R | Weak neg pic - as tho in wrong system | EEPROM IC1205 pt no XL24D02P-AA1 corrupted - needs self checking once fitted | ||
| Panasonic | Z7 TC14S3R | Self check proc | Press F button & Vol - button on set & status on r/c at same time. When complete sw off set then on again & retune | ||
| Panasonic | Z7 | Service mode access | Select chan 60, set sharpness to min, press timer on remote at the same time down arrow on front of set. press str after each adj to store | ||
| Panasonic | Z7 | Screams at sw on, relay operates trip & LED just blinks | D861 o/c in psu (8v feed to pin 9 IC601) Cct Diag mistake - anode D861 connects to pin 1 IC851 NOT 852 | ||
| Panasonic | Z7 | No sound - OK with sound I/P via scart | FM sound I/p ok at pin 2 IC601 M52778SP-A but no o/p at pin 47 - chip duff | ||
| Panasonic | Z7 | Flashing LED at sw on & no start up | Replace o/c R811 (220k 0.5w) in power supply. | ||
| Panasonic | Z7 | Dead except from whistle from psu | No line drive - D861 start up supply for IC601 o/c |