Dicas Reparação




Modelo - Chassis


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MarcaModelo
(Chassis)
SintomaCausaSoluçãoPor:
SonyTCFX520R
NO FF/REW Unit would not go into FF or REW. Brakes remained on. Playand music scan operated normally.
SonyTCFX707R
UNIT DEAD - NO OPERATION Found R506 blown, replaced same. Transport worked, but nodisplay and no playback audio. Found PS302 open, replaced same. All OK.Ran several hours. Noticed PB level started to drop intermittently.Later, the display showed low and the audio had dropped
SonySL5200
DISTORTED AUDIO Unit works properly in 3 shops. When in customer,with video from VCR, Beta Hi-Fi will drop out. Happens when recordinglevel exceeds 6 on meter in manual or anytime in audio record level.When recording FM audio on TV audio, no problem. Dynamic range?
SonySTRVX550
P/N FOR BLACK CABINET PARTS We need the part number for the black upper case, as well asnumbers for the other black style cabinet parts. -HQ COMMENTS: Part number is 4-886-109-31. The part is the same asCDP-610ES
SonyBMC550
DRUM ASS'Y The S/M of BMC-500 unit gives the same part number as well asfor the BMC-110. But they are different, cannot be mounted properly onthe A-6050-209-A. The opening is much smaller and will not go over thescrew holding the track which the threading ring ri
SonyWM16
STOP BUTTON STUCK DOWN Stop button stuck down.
SonyBMC110
PICTURE BREAK UP WHEN RECORDING OUTDOORS When recording outdoors, the picture is intermittent with theedges of objects breaking up. In all cases Kodak L750 tape was beingused. In one case TDK L750 tape was used. TDK makes Kodak tape. -HQ COMMENTS: It was determined that the problem occurred
SonyKV1952RX
NO PART NUMBER FOR CP003, 1-417-087-00 No part number in the service manual for CP003 located onthe MU board.
SonyKV2680R
NO PICTURE AND NO SOUND, C-140 ON "A" BOARD Problem was no picture and no sound. ASC hooked up thisKV-2680R P3 chassis to his RCA test jig model 10J106A using Telematicadaptor 10J733 (Color TV S/B #212).
SonyXM120
INTERMITTENTLY STAYS IN PROTECTION MODE Unit would intermittently go into protection mode when turnedon, or while playing. Also when Acc power was removed, unit would go intoprotection mode and would not shut off. Unit continued to draw current.
SonyKV1354R
NO PROGRAMMING, REPLACED Q-024 Unit would not hold memory. When you set tunning switch on VCwould go to max. and green tuning bar was all the way across. Checkingaround memory chip IC-002/pin 2 had no -25V. Found Q024 open.Also found that Q-024 on some sets replaced with a 680 ohm
SonyKV2670R
INTERMITTENT AUDIO, SPEAKER LEAD COLD SOLDER Two units with intermittent audio caused by unsolderedspeaker leads.
SonySL2400
POWER SUPPLY Unit will not cut off with power switch or remote. This unithas a PS-34 and PS-35 circuit board (power supply). It is not UL listed.How do we get the correct service manual? -HQ COMMENTS: A Supplement-2 was issued in Jan 1984 which covers thePS-34 and
SonyKV25XBR
RGB GOES ON BY ITSELF RGB will turn on at sound vibration or by opening/closing ofcontrol panel. The unit sensitive to vibration has its RGB buttontouching the switch and just slight vibration will turn it down.
SonyPST20
P/N FOR HEADSHELL We need a P/N for the headshell of PS-T20. Page 22 of themanual shows it but only gives P/N for cartridge. -HQ COMMENTS: The P/N for the headshell is X-4857-616-0. It is listedon page 38 in the service manual (for US and other destinations).


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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