Dicas Reparação




Modelo - Chassis KV2649R


Pesquisa: KV2649R Enviar Dica Resolvida
Resultados 35
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(Chassis)
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SonyKV2649R
Q-007 AND Q-OO8 SHOULD NOT BE IN PARTS LIST Transistors Q-007, Q-008 are listed in the parts list but notin the schematic. These two transistors are listed in the parts list bymistake. -HQ COMMENTS: Please remove these two transistors from your servicemanual.
SonyKV2649RX
ANTENNA CHANGE SWITCH This part is no longer available. What do we use as asubstitute for this part?-HQ COMMENTS: Please see service bulletin number 61.
SonyKV2649RX
FVR CONTROL ARCING New part installed. It started arcing after approximately3 1/2 hours. Has there been other reports of this? Do you know what thevoltage should be at MU term of FVR Res. assembly. -HQ COMMENTS: The voltage at the MU terminal should be 7 KV and at FVte
SonyKV2649R
REMOTE CONTROL - TURN ON ONLY ALL OTHER FUNCTIONS INOPERABLE Remote control - turn on only all other functions inoperable.Manual control ON/OFF ok all other functions inoperable, plus unit waslock on one channel UHF-25.
SonyKV2649RX
MISSING PART NUMBER, CP003 1-417-087-00 Part number is missing from service manual.
SonyKV2649RX
FUNCTIONS INOPERATIVE, REPLACED X001 Set would turn on and off manually but no other functionswould work. Only problem we could find was clock signal at Pin 1 IC001was correct freq. but was about 2.3Vpp.
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.
SonyKV2649RX
PLUG SET PRODUCES A PULSING SOUND THROUGH SPEAKERS, Q604 Plug set in master power switch on set produces a pulsingsound through speakers. When power switch is pressed set comes on withnormal picture and a slight hum in audio.
SonyKV2649R
NO CHANNEL CHANGE, REPLACED D021 Plug TV into AC and it turns right on. Itchannel cannot be changed and no other functions work.
SonyKV2649RX
POOR FOCUS AND RETRACE LINES, CRT BASE CLEANING, ETC Intermittent fine retrace lines and poor focus. This problemcould show up when the weather is humid.
SonyKV2649RX
LOCKED IN ON MODE, NO MANUAL OR REMOTE FUNCTIONS, D021 Set could only be turned on or off by master switch. Noother functions would respond. Inspection revealed that a signal wasalways present at Pin 37 of IC001. Also, at Pin 18, same IC, power onsignal present. Disconnecting D021 removed the signal pres
SonyKV2649RX
WOULD NOT CHANGE CHANNELS, LOCKED ON CH 6, REPLACED IC003 Unit would not change channels, locked on ch. 6 and no powermanually.
SonyKV2649RX
JIG ADAPTER INFORMATION Servicer has Sylvania (CK-3000) test jigs in shop and wants touse them on KV-2649RX chassis. Found the inductor in the jig burned out. -HQ COMMENTS: The following adapters are available from Telematic,108-02, Otis Ave., Corona, NY 11368 (718) 271-5200
SonyKV2649R
NO DISPLAY INTERMITTENTLY, REPLACED DISPLAY TUBE Intermittent channel indication.
SonyKV2649R
NO DISPLAY LIGHT, RESOLDERED JUMPER Display did not lite at all. Lower channels did not comeon all the time (int). Higher channels worked fine, picture was good.Found no HP going to T001 (HPT) on MT board.


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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