Dicas Reparação SHARP
Modelo - Chassis
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sharp | S3B | Q603 lop tr 2SD1554 s/c | evidence of overheating - check drive wfm - if low change D601, 603 & 607 1N4004 | ||
| Sharp | S3B | no pic - rushing noise from spkr | 9.5v supply missing - R745 0R33 o/c | ||
| Sharp | S3B | low contrast with flashes | BF421 tr on crt base (auto grey scale) | ||
| Sharp | S3B | flickering pic | BY299 D713 high fwd res | ||
| Sharp | EURO-DS | off - no st/by | C707 22µ 50v | ||
| Sharp | EURO-DS | field collapse | IC1402 NVM3060 can be corrupted - check location 7A should be 00 | ||
| Sharp | Euro DS1 | off with faint whistling | lopt | ||
| Sharp | Euro DS1 | blue screen only | supply to IC250 pin 7 missing - C257 33µ 16v s/c & D250 2v1 zener o/c | ||
| Sharp | Euro DS | dead low, varying ht 10-50v | ht pot int | ||
| Sharp | DW100 66FW53H | Dead - usually IC705 opto is to blame - Pt. No. RH-FX0106BMZZ | changed to RH-FX0110BMZZ - When the opto fails it usually takes out the line output transistor(BUH515) and the feed resistor to the line o/p stage 1R2W resistor. You need to add a 145v avalanches diode to the circuit on the print side directly beneath C720(H.T. reservoir cap) which also will need to be replaced. | ||
| Sharp | DV6632H | Tripping | Dry joints scan coil plug & leaky LOPTr BU508AF | ||
| Sharp | DV6632H | Shuts down completely aft Red then green LED briefly lit | Field o/p chip TDA8170 & R645 1R 1w - check 3x100µ caps behind fop chip | ||
| Sharp | DV6632H | Ragged verts & E/W dist | C623 4µ7 63v in E/W cct by Q603 | ||
| Sharp | DV6632H | FB lines at top (R,G,B) & shaking pic with pulling | C506 100µ 65v, C623 4µ7 100v | ||
| Sharp | DV6632H | Dead - chopper tr 2SD1546 s/c | Check dry joints in psu esp on Q603 & R710 100k 2w hi res & IC700 MC446022P2 shorted |