Dicas Reparação HITACHI
Modelo - Chassis
Pesquisa: HITACHI Enviar Dica Resolvida
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Hitachi | C2564TN | Field & E/W int | Check for dry joints esp on FOP chip (hidden under plastic strut) | ||
| Hitachi | C2564TN | Dead apart from LED flickering | F902 630mA o/c, LOPTr BU808DF1 & corr Tr BU801 s/c; D704 mod diode failed due to dry joints Q651, check L650. Note :- comps normally run hot - will not work with dummy load | ||
| Hitachi | C2564TN | Dead - s/c lop tr &/or e/w mod diode | Check L651 e/w coil for drys also L650 & Q651/652 | ||
| HITACHI | C2564N | FRAME COLLAPSE | REPLACE FRAME IC AND C604 IC**TDA8178, 100MFD63V | ||
| Hitachi | C2564 | No Txt | ENTER THE PROGRAMME MODE OF THE SET BY PRESSING AND HOLDING BOTH THE VOLUME + AND VOLUME - BUTTONS WHILE SWITCHING THE SET ON BY THE MAINS ON OFF SWITCH. AFTER A FEW SECONDS, THE CHANNEL DISPLAY WILL GO OUT AND THE SCREEN PROMPT "SERVICE 05" WILL APPEAR. PULL DOWN THE FRONT COVER OF THE REMOTE CONTROL HANDSET TO REVEAL THE VCR CONTROLS PRESS THE TWO RECORD BUTTONS TWICE. THIS WILL BRING UP THE "TUBE" MENU.PRESS THE TELETEXT BUTTON ON THE REMOTE HANDSET,AND THE WORDS "TEXT SERVICE MODE" WILL FLASH YOU CAN NOW ADJUST THE DATA CAPTURE WINDOW BY USING THE BLUE COLOURED BUTTONS ON THE REMOTE HANDSET IT IS RECOMENDED THAT YOU START BY PRESSING THE BOTTOM BLUE BUTTON.EACH TIME YOU PRESS THE BUTTON WILL MOVE THE ADJUSTMENT ONE "NOTCH". YOU MAY NEED TO PRESS THE BUTTON 7-10 TIMES WHEN THE TEXT CLOCK STARTS TO RUN NOTE THAT POSITION. THEN CONTINUE TO PRESS THE SAME BLUE BUTTON ON THE REMOTE HANDSET,NOTING THE NUMBER OF EXTRA PRESSES REQUIRED,UNTIL THE TEXT CLOCK STOPS ONCE AGAIN. NOW USING THE UPPER BLUE BUTTON,MOVE THE SETTING HALFWAY BETWEEN THE TWO POINTS YOU HAVE JUST NOTED I.E. IF THERE ARE EIGHT STEPS BETWEEN THE TWO POINTS AT WHICH THE TEXT CLOCK STOPS THEN PRESS THE UPPER BLUE BUTTON FOUR TIMES. WHEN YOU HAVE REACHED THIS POINT THE TEXT SHOULD RUN NORMALLY.PRESS THE STORE BUTTON ON THE REMOTE HANDSET AND THEN GO TO STANDBY TO EXIT THE SERVICE MODE. IF FOLLOWING THIS ADJUSTMENT THESE SETTINGS WILL NOT STORE, REPLACE I.C.2002 PART No E740007 | ||
| Hitachi | C2558TN | Tripping to st/by | C931/2/3 on sec of sm trfmr - Note R/C reqd to bring set out of st/by | ||
| Hitachi | C2558TN | st/by - wont come out of using front controls | use hset - reason u/k | ||
| Hitachi | C2558TN | Slow start up | 12v rail low - C933 2200µ 25v | ||
| Hitachi | C2558TN | High HT | R941 100k, ZD941 10v zener - HT = 157v | ||
| Hitachi | C2558 | repeated failure of TDA3654 field o/p chip | dry joint scan coil tag also replace flyback boost cap to pin 6 (47 or 100µ) | ||
| Hitachi | C2557N | Weak sound & low contrast | C758 100nf S/C ALB line. | ||
| Hitachi | C2556TN | Trips 3 - 5 secs aft sw on | R950 68k hi res | ||
| Hitachi | C2556TN | Int off when disturbed | Check HT pot VR950 by replacement- & check R950 | ||
| Hitachi | C2556TN | Int loss of sound/pic | Dry joints L7805 IC951 5v reg | ||
| Hitachi | C2556TN | Int goes to st/by or off | Happens when disturbed mainly - check wire links at front of pcb for dry joints |