Hitachi Repair Tips
Search: hitachi
Results: 1065
Results: 1065
| Make | Model | Symptom | Problem | Solution | By |
|---|---|---|---|---|---|
| HITACHI |
G7P
|
Hum bar | Slight adj of agc preset | ||
| HITACHI |
G7P
|
Flashing pic - worse when tapped | Ic703 9v reg dry joints (could not be seen) | ||
| HITACHI |
G7P
|
Field collapse | Replace r719 o/c with wire link | ||
| HITACHI |
G7P
|
Dead/int - blowing chopper transistor. | R932 gone high connected to pin 4 ic901. | ||
| HITACHI |
G7P
|
Dead with only 33v at line op. coll. | Check main smoothing 150mfd 400v c909 | ||
| HITACHI |
G7P
|
Dead surge limiter o/c 3r9 7w q901 ok | C919 4n7 1kv sc | ||
| HITACHI |
G7P
|
Dead int & blows chopper tr | R932 220k to pin 4 tda4601 hi res | ||
| HITACHI |
G7P
|
Dead - mains fuse o/c - chopper tr s/c | Check r931 150k & r932 120k | ||
| HITACHI |
G7P
|
Dead - ht low at 26v until lop stage dis'd | D905 mpg06j leaky | ||
| HITACHI |
G7P
|
Dead | Lop tr 2sd1884 s/c - use correct type | ||
| HITACHI |
G7P
|
Dead | Check diode across base emitter of chopper transistor | ||
| HITACHI |
G7P
|
Dead | Check r901 ( 3r9 ) 7w c919 ( 4.7nf ) 1kv and c928 ( 2.2nf ) 2kv r932 r931 ( 100k ) q901 ( but11 ) d904 | ||
| HITACHI |
G7P
|
Cuts out int | R919 920 100k | ||
| HITACHI |
G7P
|
Cuts out aft half hour | Prot thy triggers due to q704 bf432 leaky when warm | ||
| HITACHI |
G7P
|
Crowbar operates aft 5 secs aft loptx replacement | Zd703 faulty - measured ok out of cct | ||
| HITACHI |
G7P
|
Comes on bright then trips off | Q801 bc558 or zd804 9v1 | ||
| HITACHI |
G7P
|
Black lines across screen & int field collapse | Dry joints field o/p chip ic601 | ||
| HITACHI |
G7P
|
Bent verts at top when playing tapes | Try changing c104 to 22µ & c205 to 4µ7 - if this makes no difference, reduce c701 to 3n3 & c702 to 0µ47 50v (unofficial) | ||
| HITACHI |
G7/8QP
|
White screen | Refit c171 | ||
| HITACHI |
G7/8QP
|
Stuck in standby - 300v on but collector. | R902/3 ( 82k ) front l/h corner o/c. |