| Make | Model | Problem | Solution | Date |
| | | |
| Found: 34
|
| Huanyu | 37C-3 | Dead | LOPTr 2SD898B & ZD907 2v7 zener | 14-09-04 |
| Huanyu | 37C-3 | Dead - mains fuse blackened | Degaus therm | 14-09-04 |
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|
| Huanyu | 37C-3 | Dead - mains fuse o/c | Bridge rects s/c, R901 6R 6w surge lim o/c, STR4211, ZD907 2v7 zener s/c, R909 270k o/c, Q781 LOPTr 2SD898B s/c | 14-09-04 |
| Huanyu | 37C-3 | Dead - no HT or crt htrs | Dry joints brown plastic inductor by scan coil plug | 14-09-04 |
| Huanyu | 37C-3 | Dead - whining | No load on psu - no line drive - o/c print between line dr tfmr & L781 | 14-09-04 |
| Huanyu | 37C-3 | Dead with whining | HT measures 2.7v. OK on dummy load - LOPTx | 14-09-04 |
| Huanyu | 37C-3 | Field collapse | dry joints field o/p chip | 14-09-04 |
| Huanyu | 37C-3 | Field flyback blanking missing | Check C612/613 1µ 50v | 14-09-04 |
| Huanyu | 37C-3 | Field non lin | C611 2µ2 50v o/c | 14-09-04 |
| Huanyu | 37C-3 | Line collapse | Line lin coil dry joints & replace burnt R783 220R 1w | 14-09-04 |
| Huanyu | 37C-3 | No colour. | Check R318 12k, R778 & R779 1k5, TA7193AP dec chip | 14-09-04 |
| Huanyu | 37C-3 | No luminance | Check service switch for bad contacts | 14-09-04 |
| Huanyu | 37C-3 | No pic - PSU o/ps ok | L509 12v feed to col dec chip IC501 o/c | 14-09-04 |
| Huanyu | 37C-3 | No sound/pic - whining PSU | Invisible dry joint at L782 in series with LOPTr emitter | 14-09-04 |
| Huanyu | 37C-3 | No start up | Check R710 10k 3w - line osc start up res | 14-09-04 |
| Huanyu | 37C-3 | Ringing & patterning | IC201 CD7607AP - TA7607AP does in lieu | 14-09-04 |
| Huanyu | 37C-3 | Sound int | poor connection to speaker push on connector | 14-09-04 |
| Huanyu | 37C-3 | When replacing C907 2µ2 160v | Markings on pcb may be wrong -ve of C907 to cath D905 | 14-09-04 |
| Huanyu | 37C-3R | Int dead with mains sw solenoid operating | STR4011 power chip | 14-09-04 |
| Huanyu | 37C3 | bright raster with fb lines | RGB supply low C774 10µ 250v o/c | 14-09-04 |
| Huanyu | 37C3 | Brightness varies & int fb lines | C774 4µ7 250v | 14-09-04 |
| Huanyu | 37C3 | Dead - line transistor s/c. | ZD907 ( 2.7v ) zener. | 14-09-04 |
|
|
| Huanyu | 37C3 | Height 3" only | C619 2µ2 50v | 14-09-04 |
| Huanyu | 37C3 | Line foldover, centre cramp, lack of width | Dry joint L781 | 14-09-04 |
| Huanyu | 37C3 | Striations down lh side | Dry joint C770 HT filter | 14-09-04 |
| Huanyu | 37C3 365A | Dead - fuse o/c. | Bridge recy , 6ohm , 6W R901 o/c , ZD907 ( 2.7v zener ) , Q781 ( 2SD898B ) line | 14-09-04 |
| Huanyu | 37C3 365A | Line collapse Int. | Drys on T781. | 14-09-04 |
| Huanyu | 37C3 365A | Line collapse. | R783 ( 220ohm , 1W ) o/c/burnt , resolder Lin coil. | 14-09-04 |
| Huanyu | 37C3 365A | No line. | R783 ( 100R ) o/c , D781 s/c , Due to drys on L783. | 14-09-04 |
| Huanyu | 37C3 365A | No picture. | L509 ( 100uh ) o/c , 12v feed to colour decoder IC. | 14-09-04 |