Dicas Reparação




Modelo - Chassis SPP95


Pesquisa: SPP95 Enviar Dica Resolvida
Resultados 11
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(Chassis)
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SonySPP95
TRANSMIT FREQUENCY OFFSET FAILURE While testing handset with S4015 stabilock, unit failedspecifications for Xmit frequency offset. Crystal was oscillating butwill either be off frequency, or low amplitude. Symptoms include no talkand range distortion.
SonySPP95
HANDSET MICROPHONE LOW/LOW AUDIO LINE Unit's handset transmitted low audio to base. FoundIC-501/pin 30 to be 4 V, which did not allow the incoming signal to beamplified.
SonySPP95
NO TALK- ERROR BEEPS - REPLACE Q-551, P/N 8-729-821-27 When the talk button is pressed on the handset, the unit wouldnot scan through the channel LED's but LED 1 and 2 would blink along withfive error beeps. The handset was not transmitting while in test. Ifound Q551 to be open which is the TX switch to su
SonySPP95
NO HANDSET TRANSMIT - REPLACE D-551, P/N 8-719-949-46 The handset would not transmit. I checked IC651 (PLL) and itwas operating properly. Next, I checked pin 1 of IC551 and found nofrequency. Also, D551 was open.
SonySPP95
NO POWER LED - REFLOW R-260 No power LED, the unit worked fine, but the power LED did notlight. I found R260 cold solered.
SonySPP95
NO HANDSET TRANSMIT - L553 POPPED THROUGH BOARD Handset was not putting out any transmit signal. L553 waspopped through the board and did not allow for oscillation.
SonySPP95
NO BASE TRANSMIT - REPLACE IC-151, P/N 8-759-824-20 I found the base unable to transmit. I checked the Q253collector and found 1v. I lifted pin 17 of IC151 (VCC) and checked Q253again and found voltage to return to 3v.
SonySPP95
NO HANDSET TRANSMIT OR TX FREQUENCY HIGH OR LOW - IC-651 I found the handset unable to transmit. I checked thevoltage at pin 4 of IC652 and found 1v. Then I lifted pin 17 of IC651(VCC) and checked pin 4 of IC652 again and found voltage returned to 3v.Also in other units, I found IC-651 defective, which preven
SonySPP95
HANDSET TRANSMIT FREQUENCY HIGH OR LOW - REPLACE X-651 X651 is defective preventing the adjustment of the handsettransmit frequency. The TX frequency can be either high or low. I haveseen many of both circumstances.
SonySPP95
NO VOLUME CONTROL Found unit not able to change the volume of the handsetspeaker. Checked pin 3 of IC-701 (Volume Pin) was always low. CheckedR-720 and found it missing. R-720 supplies the high for IC-701/pin 3.
SonySPP95
NO AUDIO No audio being transmitted from handset.


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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