| Make | Model | Problem | Solution | Date |
| | | |
| Found: 901
|
| Hitachi | C2519T | switches on with max sound | R1555 47R o/c feeds µproc with 5v | 14-09-04 |
| Hitachi | C2524 | Cause of psu blow up | Check HT pot | 14-09-04 |
| Hitachi | C2524 | Dead - HT present when psu is unloaded only | R908 39R o/c | 14-09-04 |
| Hitachi | C2524 | dead after width variation & crackling | replaced R909 39k, Q903 BUT12AF, Q871 BU508AF, C908 4µ7 & KD903. Final fault was s/c on tuner 9v line | 14-09-04 |
| Hitachi | C2524R/C2824R | Dead - psu blow up | Replace R761, 762, 766 all 2R2, R909, R902, R901, C906, C908, ZD903, ZD901, ZD902, LOPTr 2SD1884 & chopper Tr BUT12AF | 14-09-04 |
| Hitachi | C2524T | No sigs | no tuning volts R144 10k, R044 12k o/c | 14-09-04 |
| Hitachi | C2524T | No sound/pic via scart | QB01 transistor (BC548) situated behind the socket was leaky. | 14-09-04 |
| Hitachi | C2524TZ | LOPTx replacement | HR type HR7832 not as in cat - also check R909 39k for hi HT | 14-09-04 |
| Hitachi | C2524TZ | St/by only | Dry joints T901 caused ZD903 180v o/c?, R901 o/c, Q781 & Q903 s/c & check R902, R903, R909, R912, R760, R761, R762, R766 & resold dry joints T901 | 14-09-04 |
| Hitachi | C2544 | E-W correction faulty | D702, C707 & Q652 | 14-09-04 |
|
|
| Hitachi | C2544TN | Trips at 1 sec interval | C924 470µ 16v in 5v supply or R609 1R0 in 27v supply o/c | 14-09-04 |
| Hitachi | C2544TN G100 | Hum on sound & patt on pic | C924 470µ 16v, C925 10µ 50v, C927 470µ 25v in 5 & 12v supplies | 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 |