Dicas Reparação




Modelo - Chassis 5000


Pesquisa: 5000 Enviar Dica Resolvida
Resultados 253
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SonyKP5000
COLOR DISTORTION This unit would change the width of the green raster by twoinches when going from min to max brightness. The unit would alsoconverge OK on internal generator and then when it went back to video, theunit would be misconverged but would still check OK on
SonyKV5000
DEAD Days to weeks after repair unit blows 2SC1034 chopper andfuse. Original service was chopper transistor and fuse replacement.Servicer did not find cause of this failure.
SonyKP5000
OUT OF CONVERGENCE Green would go in and out of convergence as the green tube wasarcing. Also brightness level change would affect size of green pictureproducing misconvergence effect.
SonyKV5000
NO OPERATION WITH AC Set would not work on AC. All DC checks which we could thinkwere performed. Power supply simply would not start. Found waveform 27would appear for just an instant and die away. Transformer T606 checkedgood so C611 must be culprit.
SonyKP5000
PICTURE DISTORTION, LOOSE SCREW ON HOR DRIVE TRANS. Q5104 Intermittent horizontal sweep problem causes sweep to collapseand burn a vertical line in the three picture tubes.
SonyKP5000
DEAD, REPLACED MICA SPACER UNDER VERT OUTPUT TRANSISTOR 2.5 amp fuse on B+ line would blow every 7 to 10 days.Replacement of the fuse restored operation and hours of testing providedno clue to problem causing fuse to open. By by-passing the relay witha jumper and using a variac, increasing AC input to 130V A
SonyKP5000
POOR PURITY Color purity problems around edge of picture. Problem wascaused by flaking of phosphor edges on all three CRTs.
SonyKP5000
INCORRECT FUNCTION FOR TUNING, Q2211 LEAKY During programming unit would not stop on active channels inone direction from low to high.
SonyKP5000
CHANGES CHANNEL BY ITS SELF, REPLACED INFRARED SENSOR Unit would change channels without manual or remote activa-tion. Customer indicated that remote functions would not coincide withremote hand unit when warm (this problem was intermittent).
SonyKP5000
WILL NOT STOP CHANNEL SEARCH, REPLACED C159 In the program mode, set would not stop searching when astation was tuned in. M-15 on the M board had the required horizontalpulse. M-9 on the M board had the sync pulse. The positive and negativeAFT voltages on Pins 1 and 2 of M-8 appear to be normal
SonyKP5000
GREEN PICTURE, REPLACED C323 Severe bright green screen no control.
SonyKP5000
SHUT DOWN, REPLACED C5112 Immediate shut down - no high voltage.
SonyKP5000
DEAD, BUSHING ON VERT OUTPUT WAS CARBONIZED Unit cannot be turned on. When the power switch is activated,unit comes on for 2 seconds and goes off. Checked and F6103 was foundopen. 120V line was loaded. When I checked resistance from 120V B+ toground, I read 150 ohms both ways. GA-9 (plug) Pin


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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