Dicas Reparação Sharp







Pesquisa: sharp

Resultados 1461

MarcaModelo
(Chassis)
SintomaCausaSoluçãoPor:
Sharp59CS03HNo / int field collapseResolder L501 ( joints on body )
Sharp59CS03HField lin creeps up at bottomQ707 C33840 = BC338-40
Sharp59CS03HDead & whistlingQ306 2SA1797Q sm audio amp s/c - also check Q306, D301/2, D305 1N4933 & check for dry joints back of scan coil pcb
Sharp59CS03HDeadTDA8375A IF/video proc/tbase chip faulty IC201 (low res between pin 56 & Chassis)
Sharp59CS03HAudio noise - intQ305/306
Sharp56FW-53H DA50WE/W faultyC613 560nF 250v o/c in LOP stage
Sharp56FW-53HDead & E/W problemsLOPTr BUH515 leaky, C613 SH1010 - CHS dry jointed & o/c - cause of problem, L603 RCILP0286BMZZ, Q506 RHTX0151BMZZ(2SD2391Q) sm E/W Tr, R613 3k3 3w, D516 47v zener
Sharp56FW53HService mode accessSwitch on with vol down & Ch up buttons pressed. The ch up/down & vol up/down buttons on the handset are used to alter values & each setting must be stored by pressing St/by
Sharp56FW53HNo audioIC302 (TDA7480) l/h audio o/p Ic (about 8ukp from Seme) and two chokes connected to it L315/L316 (3.3microH) (about 1.50ukp packet of 5 from Farnell) were burnt to a crisp.After replacement I still had no l/h audio, found Q306 (2SC2412 sm) s/c in the +5v feed to the Ic (I used a BC847)
Sharp56FW53HLines of R, G & B at top of screen & pin cush dist at topNeed to set up NVM values for specific crt type obtained from Sharp Tech bulletins. Also may need to alter geometry settings in service mode.
Sharp56FW53HDead - LOPTr s/cFit new BUH515, check for dry joints C613 & C607 330µ 10v hi esr
Sharp56FW53HBlows LOPTr int at sw onC607 330µ in line driver
Sharp51FS51HAGC overload/off tune type faultTuner faulty
Sharp51DT-25H CA1Stuck in st/by with motorboating from spkrC712 220µ 16v in 10v supply almost o/c
Sharp51DT-25HLines across screen when coldC604 220u 10v



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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