Make | Model | Problem | Solution | Date |
| | | |
Found: 23
|
Hitachi | C2146 / 2546 / 2846 | Int Nicam reception | Caused by solder bridge across pins 24 & 25 Nicam dec chip IC4201 | 14-09-04 |
Hitachi | C2546 | int wont start | check R901 82k, R950 68k, R952 82k and set ht for 146v | 14-09-04 |
Hitachi | C2546 | stuck in st/by | reg ic dry joints & R952 68k hi res | 14-09-04 |
Hitachi | C2546TN | Blank raster & no sound - ok via scart | Tuner type E710029 faulty | 14-09-04 |
Hitachi | C2546TN | Dead | although the line output transistor was reading OK is was breaking down on load | 14-09-04 |
Hitachi | C2546TN | Dead | Q903 ON4584 chopper Tr o/c, ZD901 4v7 zener & D905 1N4531 s/c | 14-09-04 |
Hitachi | C2546TN | Field collapse | check for dry joints fusible res in psu | 14-09-04 |
Hitachi | C2546TN | Field collapse | Dry joint R710 near FOP chip (hidden by glue) | 14-09-04 |
Hitachi | C2546TN | Field fault | R909 had a invisible dry joint | 14-09-04 |
Hitachi | C2546TN | Int buzz esp at sw on | L901 mains I/p filter choke | 14-09-04 |
|
Hitachi | C2546TN | Int cuts out | Dry joints IC951 8v reg LM7808 | 14-09-04 |
Hitachi | C2546TN | Int excess width - provoked by tapping | Q752 BC558B breaking down | 14-09-04 |
Hitachi | C2546TN | Int operation then dead | Check dry joints IC950, IC951, IC952 & if still faulty replace IC950 | 14-09-04 |
Hitachi | C2546TN | Int reverts to st/by | Dry joint on R956 to left of reg & check reg joints | 14-09-04 |
Hitachi | C2546TN | INTETMITTANTLY CUTS OUT | RESOLDER IC951 | 14-09-04 |
Hitachi | C2546TN | No sound | Memory chip replaced | 14-09-04 |
Hitachi | C2546TN | Red cast to pic when col control increased | IC501 TDA4665 dig delay line chip | 14-09-04 |
Hitachi | C2546TN | Reverts to st/by aft a sec with "growling" | Scan coils duff | 14-09-04 |
Hitachi | C2546TN | St/by LED lit - HT to LOP stage but no line drive | Dry joints Q950 reg (under plastic support) | 14-09-04 |
Hitachi | C2546TN | St/by only | Drys on all regulators check frame ic replace 68k feed to ht pot and check the 12k next to it
replace ht pot set ht to 152 volts and dry on R791 | 14-09-04 |
Hitachi | C2546TN | Stuck in st/by prot cct in operation | 12v supply low - ZD952 11v zener leaky | 14-09-04 |
Hitachi | C2546TN | Tripping | Check R950 68k, R951 12k, R952 82k 1/2w & check for dry joints | 14-09-04 |
Hitachi | CP2546TA | St/by only | smps ok, gate of thyr not triggered & pin 17 IC001 hi. Should be hi then lo, to switch the 8, 12 and 5volts regulators on - dig tr DTC 144 leaky- holding pin 17 hi | 14-09-04 |