sharp Repair Tips




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MakeModel Ch.SymptomProblem SolutionSolutionBy:
Sharp CV2123 CS
Field fault / general modificationAdd a 1N4148 diode from the emitter of Q509 to cathode of D513 cathode to emitter of Q509, Pt No. RH-DX0045BMZZ, change R534 to 390ohms Pt No. VRS-TV1JD391J and add a fuse in series with L607 and L608 Pt No. QFS-J1023CEZZ
Sharp 66FW53 widescreen DA-100 , 50 and 100Hz series
E/W faultCoil L603 part num RCILP0286BMZZ had severely burnt up and Q506 E/W driver 2SD2391 Part num RH-TX0151BMZZ was short circuit. If you have this fault check L604 for invisible dry joints, if you don't you may find you still have an E/W fault when you have replaced the faulty parts
Sharp DV3760H
Dead, led flashing red/green at first, then going to red standbyReplace C604 1000uF, 16v elec. cap. It is in the decoupling circuit for the 5 volt supply
Sharp TV14 Cinema Borg
When set switched on "ENTER YOU LOCKCODE" appears on screen, customer had forgotten the lock codeReplaced the Microprocessor64 pins
Sharp 66FW53H
Dead - Neon litR713 and R714 560K high or o/c
Sharp 66FW53H
Dead - neon lit ... another fault!Check the BZW04145 diode across C720, if short circuit, replace and also replace opto-isolator IC704 MOC8106 and IC706 TL431 voltage reference. You can put an 817 opto-coupler in diagonally
Sharp 66FW53H
Colours ramping, poor greyscaleReplace IC1002/3, Set will need reprogramming afterwards
Sharp 51DT25H U
No audio R305 o/cR305 2.2ohm, Q3021 BC636, Q3011 BC635
Sharp 4BSC
Low width with lines across screen and feathered edgesReplace C623 and C602
Sharp 66FW53H DA100
Failure of Q601 BUH515 and possibly Q506Found dry joints on C613. Also R613 had burnt top of C613. Fitted new parts, found Circuit no longer available. Sharp by name sharp by nature came to mind. Set only just over two years old
Sharp 54DT25S
Frame foldoverCheck C713, Q510 and Q505
Sharp 54DT25S
Dead with ticking noise from lineReplaced C622, C604 and Q509
Sharp 66FW53H FW
Dead only neon litCheck D735 across 150v rail, if s/c you will need to replace the opto and the D735. Check Q601 line o/p transistor as this may also be leaky
Sharp DV5131H S3B
Intermittent failure of Q603Replace C601 low in value
Sharp Unknown
Fault like soft crtI had 3 of these sets which all looked like soft crt, i changed the crt base from a known good set and all was ok i do not know the fault on the crt base yet but it was as good as new
Sharp 51DT-25H
TV does not turn on, no standby lightR704 was o/c
Sharp VARIOUS
El mecanismo de transporte de la cinta pierde velocidad.Rodillo del cabrestante or banda del cabrestante
Sharp 21HS-50H GA-1E
Trips 1 second after switch onR613 o/c located near scart socket
Sharp 5BSA
Small pictureReplace D716 27V and D717 75V
Sharp 21B
No UHF BandCheck Q212