4BSC Repair Tips
Search: 4BSC
Results 20
Results 20
| Make | Model Ch. | Symptom | Problem Solution | Solution | By: |
|---|---|---|---|---|---|
| Sharp | 4BSC | Low width with lines across screen and feathered edges | Replace C623 and C602 | ||
| Sharp | 4BSC DV6632H | very faint colour lines on the top | C501 VCEAGA1HW107M, C506 VCEAGA1VW107M leaky | ||
| Sharp | 4BSC DV6632H | repeated failure of LOPTr | resolder scan coil connections | ||
| Sharp | 4BSC DV6632H | line pulling, bent verticals | C623 4.7uF 50V next to Q603 regulator | ||
| Sharp | 4BSC DV6632H | frame foldover at the top | C505 100uF 40V | ||
| Sharp | 4BSC DV6632H | burst of EHT then shuts down | IC500 TDA8170 s/c R645 1R 1W o/c | ||
| Sharp | 4BSC DV5940H | stuck in stby | D600 1N4936 s/c, R645 1R 1W o/c on LOPTx pin 3 | ||
| Sharp | 4BSC DV5940H | dead, LOPTr s/c | Q600 2SD1546 s/c, SMD Q606 2SC2412 leaky, resolder scan coil plug | ||
| Sharp | 4BSC 66AS05H | stuck in stby, when brought out LED goes green, quick burst of EHT, then shuts down with LED red | SMD Q606 2SC2412 leaky | ||
| Sharp | 4BSC 66AS05H | No line aft repairing dry joints scan coil & LOPTr s/c LEDs sw between Red/Green | leaky s.m. transistor Q606 [2SC2412] in the line drive circuit. | ||
| Sharp | 4BSC 66AS05H | No E-W corr aft replacing TDA8170 FOP chip, R645 & C506 for tripping off | Q603 2SD1913S collector base leakage, and C603 4.7uF high ESR | ||
| Sharp | 4BSC 66AS05H | excessive width with E-W error | L601 shorted turns (RCILP0104CEZZ) | ||
| Sharp | 4BSC 66AS05H | Dead with ticking | LOPTr s/c due to dry joints scan coil plug | ||
| Sharp | 4BSC 66AS05H | Dead - no line drive | IC800 MC44002 jungle chip faulty | ||
| Sharp | 4BSC 66AS05H | Dead - LOPTr 2SD1546 failed | Replacement only lasted days - IC800 MC44002P line drive pin 12 only 1v instead of 3v - chip faulty. Also check state of Q601 2SC2271 dr tr & Q606 pre driver tr | ||
| Sharp | 4BSC 66AS05H | Dead | Lop tr Q600 2SD1546 u/s. Line drive wfm at C607 cramped - Q606 2SC2412 sm leaky | ||
| Sharp | 4BSC 66AS05H | blank raster, OSD ok | SMD Q400 2SC2412/BC848 s/c (video buffer transistor) | ||
| Sharp | 4BSC | Trips int with burning smell - brief field coll noticed | IC500 fop chip burnt, C506 100ยต 25v faulty | ||
| Sharp | 4BSC | EHT dies away at sw on | R465 1R o/c supply to field chip usually - 12v reg this time | ||
| Sharp | 4BSC | Dead after initial HT supply rise | IC600 forms part of trip cct. R645 1R 1W safety res o/c |