Hitachi Repair Tips
Search: hitachi
Results: 1065
Results: 1065
| Make | Model | Symptom | Problem | Solution | By |
|---|---|---|---|---|---|
| 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 | ||
| HITACHI |
C2874TN
|
Dead with popping sound from spkrs | R901 82k o/c | ||
| HITACHI |
C2874TN
|
Dead with plopping sound at sw on | R901 82k 1/2w start up res o/c | ||
| HITACHI |
C2874TH
|
Rolling pic when warm | Fop stage supply 4v high at 29v. r952 68k in ht sampling circuit hi res | ||
| HITACHI |
C2864TNZ
|
Slow or no start up | C909 470µ 25v | ||
| 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. | ||
| 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 | ||
| 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. | ||
| HITACHI |
C2862TN
|
No ew and low width | Ch09 150nf oc | ||
| HITACHI |
C2858TN
|
Int dead between 1 & 3 secs | Replace vr941 2k2, r941 100k, and set ht to 157v | ||
| HITACHI |
C2858TN
|
Dead int for a few secs at a time | Vr941 2k2, r941 100k - adj ht to 157v | ||
| HITACHI |
C2858TN
|
Dead & tripping | C932 1000µ 16v, c933 2200µ 16v low cap | ||
| HITACHI |
C2856/2886
|
Ht setting | 152v | ||
| HITACHI |
C2848TN
|
Txt has low contrast | Poor freq response on txt - change c805-6&7 to 470pf, check r203 is 2k2 & r204 is 560r - r204 can be changed to 680r as a last resort | ||
| HITACHI |
C2848TN
|
No tuning or hi vol setting (hotel mode) | Depress vol+/- whilst sw on. press 2 vcr buttons on r/c. check for "h" in lower right of menu. if pesent, delete using - /-- button. | ||
| HITACHI |
C2848TN
|
No sound - sound psu tripping | Still trips with both audio o/p chips dis'd - d9112 s/c | ||
| HITACHI |
C2848TN
|
In factory set up mode - c***48tn-311 displayed | Remove r/c flap & press tuning button. then press menu button & go to st/by | ||
| HITACHI |
C2848TN
|
Dead | Check 138v ht if hi check r950-2, q703 gate = 3-4v (trip mode) check for dry joints on r719 or ics 950, 951,952 | ||
| HITACHI |
C2846TN A4
|
St/by only or int goes to st/by | Dry joints r957 (near q950 heatsink) & check drys on ic951, 952 etc | ||
| HITACHI |
C2846TN A4
|
Raster still present in st/by | D4470 1n4531 leaky (rhs of the heatsink audio ic4450), working diode must have 28v at one end and 3.5v at the other end. |