Dicas Reparação Sharp







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Resultados 1461

MarcaModelo
(Chassis)
SintomaCausaSoluçãoPor:
Sharp66CS03TrippingC714 1000µ 10v & LOPTx arcing - check also dry joints scan coils
Sharp66CS03St/by onlyLeaky blue disc ceramic cap 2n2 2kv on underside of pcb
Sharp66CS03BLOWING LINE O/P TRANSISTORRESOLDER DRY JOINTS ON SCAN COIL PCB
Sharp66AS06HShuts down aft 1 sec with R632 going o/cC619 560nF 250v - also check R632 & R619 39R 1/2w
Sharp5BSA 51AT15H/15AT151RDead st/by only - led goes out when chan no. pressedNo line drive pin 12 MC4407 IC801 as no 5v supply at pin 35. Q708 BC338-40 st/by tr s/c
Sharp5BSA 51AT15H Field foldover at bottom with fb lines near centre of screen; no front controls or R/CQ509 BC635 & Q510 BC338 in field timebase both leaky & affecting data lines
Sharp5BSA 51AT15Hwhistling noise and picture tearing for first 3 min from coldC604 220uF 10V in PSU
Sharp5BSA 51AT15Hvertical picture shift, alters with temperaturereplace R512 180k 0.5W next to Q508
Sharp5BSA 51AT15HTo reprog NVM for AFT/AGCAuto tune tv to a chan, fine tune for best result then go into service mode, go to AFT adj, & press key symbol
Sharp5BSA 51AT15HThree col flyback lines at top of screenD504 & D507 1N4148
Sharp5BSA 51AT15HSnowy raster onlyNo 12v to tuner - R243 5R6 1/2w o/c also check C713 1000µ 35v in -10v supply for various faults
Sharp5BSA 51AT15HSmall pic - HT low (should be 108v)Check D716 27v & D717 75v zeners by replacement
Sharp5BSA 51AT15HSlow start, cogging, loptr failure or trippingReplace all 6 elects on psu sec & Q704/708 BC338-40 5v reg trs & Q601 BU508DFI LOPTr
Sharp5BSA 51AT15Hshort pic & no reponse to front or R/CQ509 BC635, Q510 BC338 next to field o/p pair & C713 100µ 16v
Sharp5BSA 51AT15Hpowers up from mains switch, LED flashes then goes out with no pidc or sound. When switched off high pitched noise comes from speaker going down in frequencyDJ on D710 and C713 1000uF 25V s/c



Assistência TécnicaAs dicas apresentadas destinam-se a técnicos de eletrónica, a tentativa de reparação ou assistência sem ter conhecimentos de eletricidade e eletrónica, podem provocar danos mais graves aos equipamentos e, devido a tensões muito elevadas em alguns circuitos, graves danos fisicos que podem constituir um risco em determinadas reparações.

Não arrisque reparar equipamentos com tensões elevadas se não tiver conhecimentos técnicos para o fazer em segurança.

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