Dicas Reparação




Modelo - Chassis SLHFR30


Pesquisa: SLHFR30 Enviar Dica Resolvida
Resultados 13
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MarcaModelo
(Chassis)
SintomaCausaSoluçãoPor:
SonySLHFR30
NO DRUM LOCK IN BETASCAN PB and REC OK, but no drum lock in Betascan. Excessiveripple on 12V regulated DC line.
SonySLHFR30
DISTORTED AUDIO, VIDEO ON RF OUTPUT ONLY Picture overload, bending, buzz in sound, only when using RFoutput. Pix and sound OK at video output jack.
SonySLHFR30
NOISE BAR IN LOW BAND Unit had buzz in sound and a horizontal bar floating throughpicture. Traced problem to -20 volt line, very high ripple. Thisvoltage is used in the band select. Only channels 2-6 were affected,high band okay.
SonySLHFR30
REEL DRIVE FLYWHEEL BEARING Servicer experienced several SL-HFR30 all sold by'same dealer, with reel drive torque problems. Flywheel was not turningfreely in bearing.
SonySLHFR30
INTERMITTENT LOSS OF VERTICAL SYNC Critical or intermittent vert sync.
SonySLHFR30
WAVERY VIDEO Unit displayed wavery video and vertical roll during play-back, E to E tuner or video in.
SonySLHFR30
UNUSUAL FAILURE OF BRAKE SOLENOID First three units received for service all displayed sameproblem, open solenoid.
SonySLHFR30
UNIT WOULD POWER ITSELF ON WHEN CASSETTE LOADED With cassette loaded and unit powered down, unit would inter-mittently power itself on. Scoped all lines to MPU and found clitches onthe chassette on line (P8 of IC1). Measured the resistance of switch S903and was about 1/2 meg.
SonySLHFR30
NO POWER No power. 5.5 volt line was down to 2.9 volts. ReplacedIC001, 5.5 volts appeared but still wonunder TR-15 board, grounding the power on.
SonySLHFR30
PLAYBACK PICTURE DISTORTED When scoping RF envelope, one head missing. Servicer hasalready changed the heads. Traced RF (A and B) to Pins 17 and 18. Bothheads were present. Check PG pulse at Pin 9, it was okay. No output atPin 14 for one head.
SonySLHFR30
GREEN COLOR DURING PAUSE AND BETASCAN Color shifts to green during PAUSE and BETASCAN (FF and REW).Pin 9/IC4 on YC-30 board chroma OK during PAUSE and BETASCAN but outputPin 11/IC4 chroma is bad during PAUSE and BETASCAN.
SonySLHFR30
EJECT BUTTON BROKEN Complete panel needs replacement, and is rejected underwarranty, when only one button is inoperative. Panel does not appear tohave any customer abuse or misuse. -HQ COMMENTS: The EJECT button failed as a result of a weak or voidarea in the plastic. I
SonySLHFR30
MUCH GRAINIER AND DARKER PICTURE Picture is much grainier and darker than his TV when on cable.This E to E or playback can -HQ COMMENTS: We have not received any similar reports regarding thisproblem. I checked in our lab with an HFR30 connected to an antennasystem, and also at home 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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