| Make | Model | Problem | Solution | Date |
| | | |
| Found: 38
|
| Huanyu | 37-C2 | Hor lines & focus | C610 2µ2 63v | 14-09-04 |
| Huanyu | 37C-2 | int dead - esp when cold | Power reg STR4211 int - stopped working when freezer applied | 14-09-04 |
| Huanyu | 37C-2 | line collapse | dry joints T782 | 14-09-04 |
| Huanyu | 37C-2 | No luminance | D306 1S2076 - checked ok out of cct | 14-09-04 |
| Huanyu | 37C-2 | Pic shifted horizontally | D781 SM1-02 & R783 220 1w disintegrated - caused by C780 2µ2 160v | 14-09-04 |
| Huanyu | 37C-3 | Dead | LOPTr 2SD898B & ZD907 2v7 zener | 14-09-04 |
| Huanyu | 37C-3 | Dead - mains fuse blackened | Degaus therm | 14-09-04 |
| 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 | 37C2 | Line collapse. | Drys on T782. | 14-09-04 |
| Huanyu | 37C2 | No go with whistle. | Drys on T782. | 14-09-04 |
| Huanyu | 37C2 | Squeal only at sw on | Check R786 2k4 2w o/c or R710 10k 3w o/c | 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 |