Dicas Reparação




Modelo - Chassis


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Resultados 81391
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MarcaModelo
(Chassis)
SintomaCausaSoluçãoPor:
SonySLHF900
INTERMITTENT TAPE JAM Intermittently capstan motor overruns and eats tape whengoing from BETASCAN to PLAY. Observation of the capstan error voltage atTP515 on SS-53 board indicated that it remained at BETASCAN level, eventhough reels had switched to PLAY. C/R switching was
SonyXR44
RUBBER KEY, SWITCH REF NO MISSING Part ID number missing for item 56 on page 25 of S/M. Thepart number is listed, but the ID number in the exploded view is missing. -HQ COMMENTS: I will issue a S/B.
SonyCDXR7
INCORRECT PART NUMBER FOR IC351 Schematic correct, page 47 (IC351) incorrect, page 50 (IC351)correct. INCORRECT PART CORRECT PART 8-759-200-47 8-759-203-91 TC40H365P TC40H365F -HQ COMMENTS: A S/B is being issued.
SonyKV8100
P/N MISSING FOR CHANNEL SWITHCES Customer wants to replace channel switches. Schematic showsRef. #does not list parts. -HQ COMMENTS: The P/N for S2201-S2214 switches is 1-553-329-00 (see CTVS/B 146).
SonyKV1920
EXCESSIVE HIGH VOLTAGE Excessive high voltage.
SonySTRAV360
WRONG P/N FOR PLL CHIP Wrong P/N in manual for PLL chip (CX7925/CX7925B).
SonySLHF900
P/N FOR UPPER REAR PANEL We ordered Ref. #76 and received the UV ant. switch, we alsoassumed the block cosmetic plastic panel would come with it (it didnWe located a part # from the damaged plate which is 3-691-780-00 whichisn -HQ COMMENTS: The part number you seek is 3-691-782
SonySTP7J
RESET PROBLEMS When powered on, sometimes display is messed up. ResettingIC603, Pin 7 would restore operation.
SonyITA500
RING LEVEL Customer complains that ring level is too low. This is thesecond complaint on this unit.
SonyITA600
LOCK-UP OF PHONE LINE CAUSED BY ITA-600 Unit passed all telephone analyzer tests. However, whenconnected to the phone line, intermittent lock-up occurred, i.e. phonegave busy signal and other phones on the same line could not be used. Ahigh pitch whistle was heard and no dial tone was presen
SonyEVC8U
DISTORTED VIDEO Video looked very cloudy - no high freq.
SonyKV25XBR
DEAD RGB and sleep light on, power up and would shut down. Usinglowered line voltage set would run. Looked at H. out and found ringingwaveform. Found one of damper diodes with very high leakage.
SonyKX2501
H SQUEAL AND MISCONVERGENCE, REPLACED HVR AND L504 Unit had H squeal. Also, found when unit was cold, it hadmisconvergence on edges of CRT. After the unit warmed up, convergence wasOK.
SonyKV2649RX
SNOWY PICTURE, NO CHANNEL LIGHT, REPLACED HPT High band good, no low band or cable. No channel readout.Found had no -30 volts, HPT open.
SonyCCDM8U
NO COLOR DURING RECORDING The recording contained no color. Found problem caused by nosubcarrier clock input at pin 17 of the ED-11 board. Traced problem to apoor solder connection at IC771 on the VC-4 board. Resoldering the pinsrestored normal operation. When camera section


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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