| Make | Model | Problem | Solution | Date |
| | | |
| Found: 901
|
| Hitachi | C28W1TN | Trips aft 5 secs after trying to start up | FOPTr TDA8350Q was faulty - removing it makes no diff to symptoms HT should be approx 152v with Philips/LG crt | 14-09-04 |
| Hitachi | C28W1TN A7 | Excess height - unable to enter serv mode | Can be altered using EEPROM programmer - address 171H is the location | 14-09-04 |
| Hitachi | C28W1TN A7 | Service mode entering | Set to Chan 44 & press "Status" button(I or +) then mute & TV | 14-09-04 |
| Hitachi | C28W1TN-311 | Dead | R950 68k o/c, Q954 s/c, BU2508AF LOPTr s/c - psu will work for checking if loaded with 2k2 10w | 14-09-04 |
| Hitachi | C28W511N | Int trips | HT pot 1k, 68k feed res & check for dry joints | 14-09-04 |
| Hitachi | C28WD2TN | Dead - previously int shut down | LOPTr had a pin hole in it & was arcing to heatsink in use | 14-09-04 |
| Hitachi | C28WD2TN | dotted vertical contours of pic features | C875 22µ 250v dry jointed | 14-09-04 |
| Hitachi | C28WD2TN | Dull red raster only | Check R807/8/9 560r cathode feed resistors - if burnt out s/c crt is suspect | 14-09-04 |
| Hitachi | C28WD2TN | Goes off aft 5 mins | check sleep timer isn't set & dry joints on 5v regs - if HT is high(above 150v) check R950 & HT pot VR950 (under plastic frame) | 14-09-04 |
| Hitachi | C28WD2TN | Int start up then shuts down 2 secs aft start up with greenish pic | R809 560R ?w burnt out, Q814 BF422 leaky | 14-09-04 |
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| Hitachi | C28WD2TN | Sound int | dry joints on the component side of the PCB adjacent to the sound output chip. | 14-09-04 |
| Hitachi | C28WD2TN | St/by only | R914 1k, Q901 T636073, Q902 T636072, ZD902 BZV85C18V, ZD903 BZV85C27V | 14-09-04 |
| Hitachi | C28WD2TN | Switches on then immediately powers down | TDA8350Q and re-solder 5v reg's IC951/952 | 14-09-04 |
| Hitachi | C28WD2TN | Very faint raster only could be seen with lights off | Pic appeared with A1 advanced but no R - crt internal fault | 14-09-04 |
| Hitachi | C28WITN311 | Sw off straight after sw on | R807 & Q816 on CRT base faulty but replacements did not cure - clean pins IC400 TDA9875A did | 14-09-04 |
| Hitachi | C2964TN | No E-W & excess width | IC601 TDA8350Q | 14-09-04 |
| Hitachi | C2976TN | Dead | C703 10nF 2Kv bulged & faulty | 14-09-04 |
| Hitachi | C2976TN | Dead - BU2508AF s/c | C703 12nF 2kv o/c | 14-09-04 |
| Hitachi | C2976TN | Dead - went off with a bang | Quietly ticking noticed - mains smoothing cap 200µ 400v o/c | 14-09-04 |
| Hitachi | C2976TN | E/W int errors | Dry joints L752 | 14-09-04 |
| Hitachi | C2976TN | Field - no scan at top just a few fback lines | IC501 TDA9160A | 14-09-04 |
| Hitachi | C2976TN | Int flyback lines on dark scenes | CRT int bad con on A1 electrode | 14-09-04 |
| Hitachi | C2976TN | Pic shifted laterally with ragged verts & arcing sound | TDA8350Q | 14-09-04 |
| Hitachi | C2976TN | To remove version no. from screen | Press ESC on the handset to display the service mode menu Press Standby
Power back on whilst holding Vol+ and Vol- Without following the first two steps the procedure did not work | 14-09-04 |
| Hitachi | C2976TN | To remove version no. from screen | Press ESC on the handset to display the service mode menu Press Standby
Power back on whilst holding Vol+ and Vol- Without following the first two steps the procedure did not work | 14-09-04 |
| Hitachi | C2976TN A5 | E/W faulty | L751 dry joints IC601 TDA8350Q faulty | 14-09-04 |
| Hitachi | C2976TN A5 | Lines at top of pic | 44v supply to IC601 pin 8 from LOP low at 25v. Check D718/9 BY33J & C725 33nF 400v for o/c | 14-09-04 |
| Hitachi | C2977TN | Dead aft initial burst of EHT | C704 2n2 2Kv leaky & burnt - looked ok in cct | 14-09-04 |
| Hitachi | C2984TN | Int height | R605 50k height pot int on small panel with 3 other pots | 14-09-04 |
| Hitachi | C32W2TN | Dead - blows LOPTr | LOPTx | 14-09-04 |