Make | Model | Problem | Solution | Date |
| | | |
Found: 711
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Sharp | Euro DS1 | blue screen only | supply to IC250 pin 7 missing - C257 33µ 16v s/c & D250 2v1 zener o/c | 14-09-04 |
Sharp | Euro DS1 | off with faint whistling | lopt | 14-09-04 |
Sharp | EURO-DS | field collapse | IC1402 NVM3060 can be corrupted - check location 7A should be 00 | 14-09-04 |
Sharp | EURO-DS | off - no st/by | C707 22µ 50v | 14-09-04 |
Sharp | S3B | flickering pic | BY299 D713 high fwd res | 14-09-04 |
Sharp | S3B | low contrast with flashes | BF421 tr on crt base (auto grey scale) | 14-09-04 |
Sharp | S3B | no pic - rushing noise from spkr | 9.5v supply missing - R745 0R33 o/c | 14-09-04 |
Sharp | S3B | Q603 lop tr 2SD1554 s/c | evidence of overheating - check drive wfm - if low change D601, 603 & 607 1N4004 | 14-09-04 |
Sharp | S3B DV5131H | coloured lines on top | C712 100uF 35V | 14-09-04 |
Sharp | SV2142ED | Hi HT at 250v (115v) | Crack in print by pins 1 & 4 of STRD5441 | 14-09-04 |
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Sharp | SV2588H | Dead aft brief activity at sw on | Overiding relay gave blank raster/no sound - D712 & D713 dry joints | 14-09-04 |
Sharp | SV2589 | For PSU problems. | Resolder diodes attached to PSU heatsink. | 14-09-04 |
Sharp | SV2589 | INT RED TINT IN TOP 2/3rds OF PICTURE | C636 DRY CHECK DIODES ON HEATSINK ALSO | 14-09-04 |
Sharp | SV2589 | Red tint at top of pic & slight vert jitter | C636 330µ dy joints | 14-09-04 |
Sharp | SV287XH | Blank raster/no sound - OSD present (RF & Scart) | Switching [video and audio] is performed by IC401 [M51321P] a three gang three way device. pin 15 of the IC works on a tristate level. With the IC supply being 12V: 0 - 2.5V Input from BNC; 5 - 7V Input from scart ;9 - 12V Input from tuner. Diode D419 [DX00458M] which links to the wiper of the AGC preset was leaky, limiting the voltage on pin 15 to 7V and thus preventing tuner mode selection. Replace D419 with an IN4148 | 14-09-04 |
Sharp | SV287XH | St/by only at sw on with burning smell | R518 2R2 smokes due to fop chip IC501 LA7831 faulty - caused by C521 & 522 100µ 35v o/c | 14-09-04 |
Sharp | VT-2198B | unable to reduce vol to min - OSD OK | R1090 12k 0.25w on daughter pcb | 14-09-04 |
Sharp | VT3700 | No sound/pic - tape stuck in | R761 1R fusible o/c, Zener D757 15v s/c, L752 o/c & check ck caps in psu | 14-09-04 |
Sharp | VT3700H | Off tune on timer recs | VT supply to tuner rises when tV in st/by - IC005 33v stab RH-IZ0249CEZZJ | 14-09-04 |
Sharp | VT3700H | St/by only | L752 burnt up - replace all smis in the line concerned | 14-09-04 |
Sharp | VT3700H | Won't tune. | IC1005 , R760 IC1005 Sharp RH-IX0249CEZZ R760 220ohm , Sharp VRG-RF2EB221J | 14-09-04 |