| Make | Model | Problem | Solution | Date |
| | | |
| Found: 901
|
| Hitachi | C2864TN | Electronic screwdriver set up | Hold the vol + and - buttons and switch on. The set will come up with Factory 05 on screen. On the handset press the two rec keys twice(linked by white line)
The set will display the tube menu. The top coloured adjustments correspond to the top coloured keys on the
handset , the bottom coloured adjustments correspond to the bottom coloured keys. Push the coloured key on the hand set corresponding to the adjustment,
ie VA for vertical Amplitude. VA will be high lit. Now pressing the Vol+ or - on the handset will adjust the value. To store the settings , press diamond shaped key (store) and put set into standby to exit service mode.
You do not need to store each adjustment, you can adjust them all and store them once at the end.
It is a good idea to jot down all the numerical values for all the adjustments first, so if you make a mess you can put the adjustments back to their original settings. | 14-09-04 |
| Hitachi | C2864TN | Slow tripping/partial field coll/blank raster/no sound | R609 1R fusible o/c - also replaced TDA8178 Field o/p IC as a precaution | 14-09-04 |
| Hitachi | C2864TNX | Dead aft EHT rustle & led single blink at sw on | HT checked on dummy load at 170v (149v). Int set HT pot VR930; R509 1R 1/2w safety res by LOPTx o/c; IC800 RGB o/p chip & C821 4µ7 250v faulty also. | 14-09-04 |
| Hitachi | C2864TNZ | Slow or no start up | C909 470µ 25v | 14-09-04 |
| Hitachi | C2874TH | Rolling pic when warm | FOP stage supply 4v high at 29v. R952 68k in HT sampling circuit hi res | 14-09-04 |
| Hitachi | C2874TN | Dead with plopping sound at sw on | R901 82k 1/2w start up res o/c | 14-09-04 |
| Hitachi | C2874TN | Dead with popping sound from spkrs | R901 82k o/c | 14-09-04 |
| Hitachi | C2874TN | Field collapse - IC601 failed | Check dry joints Q601/2/3 & R610. Also E-W chip & 10R safety res not marked on cct connected between L752 & diodes D707/6 | 14-09-04 |
| Hitachi | C2874TN | Field o/p chip IC601 LA7838 fails | Check dry joints Q601/2/3 & R610 etc. Check IC751 (e/w corr) in psu | 14-09-04 |
| Hitachi | C2874TN | Int dead - can come back on its own. Sometimes red/green or no LED | Dry joints on IC951, Q953, and Q956. Q953 was the worst, all
connections to each leg were faulty. | 14-09-04 |
|
|
| Hitachi | C2874TN | Int E-W | R751 across C758 on comp side of pcb not soldered | 14-09-04 |
| Hitachi | C2874TN | Int width & E/W dist | Dry joint wire link J196 between C612 & R080 connected
to plug E180 via Pin 8 (EW connection). | 14-09-04 |
| Hitachi | C2874TNX | Trips with red led blinking | Dry joint Q953 coll under plastic runner | 14-09-04 |
| Hitachi | C2874TNY | Reverts to st/by | Check IC4451 TDA7253M audio chip & R952 68k in HT preset network | 14-09-04 |
| Hitachi | C2886TN | Blank, black raster, sound ok | Replace ST24W16 EEPROM - to select service menu: with main menu on screen, hold vol + & -
buttons on the tv until menu changes to include service option.
highlight service and press vol+ to enter. | 14-09-04 |
| Hitachi | C2886TN | Long time for pic to appear at sw on | adjust Set H.T. to 149 volts +/- .2%, Screen ( A1 ) for 147 volts on green cathode. Picture should appear aft 5 - 10 secs after sound at sw on if still a problem change R896;897;898; from 150R to 220R | 14-09-04 |
| Hitachi | C2886TN | No sound - pic ok | Muting Tr Q4000 turned on by micro. Put EEPROM into "E2 shipping mode" to set all settings to default cured it although had to retune. | 14-09-04 |
| Hitachi | C2886TN | service mode entering | Hold down menu key until install line appears, press up & down vol buttons together until service becomes an option then follow on screen prompts | 14-09-04 |
| Hitachi | C2886TN A7 | Pic takes long time to appear | Change R896,R897 & R898 from 150R TO 220R & set A1 to 147v at green Tr cath | 14-09-04 |
| Hitachi | C2886TN A7 | Sound - int crackle | Resolder caps around sound o/p IC - build up of residue on legs | 14-09-04 |
| Hitachi | C2886TN A7 | St/by only but LED dim as though working (TDA8375 version) | DJ on the ground link which is located between small caps C528, C529 near the 2 X-tals X501, X502. The DJ was on the component side of the PCB. | 14-09-04 |
| Hitachi | C2886TN A7 | When changing LOPTxs | Pay attention to type of replacement transformer; if not identical you may need to change links (see Serge) | 14-09-04 |
| Hitachi | C28P745VT Salora | Field distortion when heated | Flyback boost diode D571 leaky | 14-09-04 |
| Hitachi | C28P759 | NO PICTURE SMELLS OF BURNING | C525 DRY 2u2 100v , IF NO EW ORDER BS208 MOD KIT FROM WVE | 14-09-04 |
| Hitachi | C28P759 | No picture with burning smell | C525 2µ2 100v dry joint & burning - replaced | 14-09-04 |
| Hitachi | C28P759 | Width excessive | TB526 BS208 EW driver s/c | 14-09-04 |
| Hitachi | C28P819 | Dead | MAINS SMOOTHING CAP 150uF 400v | 14-09-04 |
| Hitachi | C28W1TN | Cuts out | FOP chip TDA3650Q - also could be 68k & 8k2 res & dry joints Line Dr Tx | 14-09-04 |
| Hitachi | C28W1TN | Cuts out aft 10 secs (line freq appears to double) | Field chip TDA3650Q - other possible causes - 68k & 8k2 res & 1k pot | 14-09-04 |
| Hitachi | C28W1TN | Tripping, tearing pic & OSD & no B | R809 560R & Q814 | 14-09-04 |