Dicas Reparação




Modelo - Chassis 2020


Pesquisa: 2020 Enviar Dica Resolvida
Resultados 176
Pedir dica reparação
MarcaModelo
(Chassis)
SintomaCausaSoluçãoPor:
SonySTRD2020
THE UNIT DISPLAYS "PROTECTION" ON DISPLAY - FAULTY IC613 No sound, and would display protection. The customer saidthe unit went out during a thunderstorm.
SonySTRD2020
INTERMITTENT NO AUDIO OR RTA DISPLAY - RESOLDER IC613 Unit had no audio and no display on RTA/EQ display. Pin 3(chip enable) of IC-313 was low. Found pin 65 (LT1) of IC-613 to have apoor solder connection.
SonyCFS2020
FORMER TYPE MAIN BOARD CROSSES TO NEW TYPE Service manual 9-953-448-12 lists differences between formerand new type. However,part number of former type main board(A-3260-849-A) subs to part number of new type (A-3260-849-B). Servicerneeds former type main board, as new type main board does not f
SonySTRD2020
NO DISPLAY No display. Radio and all other functions work (audio works).
SonySTRD2020
UNIT IN PROTECT MODE AFTER POWER UP, BAD GROUND CONNECTION Unit in protect, B+ was at +56.6V and B- was at -70.1V.
SonySTRD2020
HISS SOUND ON SURROUND REAR SPEAKERS AFTER 30 MINUTES All speakers play good however, after 30 minutes the rearsurround speakers would gradually start hissing noise.
SonySTRD2020
NO LEFT CHANNEL AUDIO No left channel audio. Traced audio back to IC-307 still didnot have audio. Went to IC-301 pins 2 and 27 had audio. Thought IC-301or IC-307 had to be bad because the digital path was still sending rightchannel audio throughout digital 1 PCB until it b
SonySTRD2020
NO AUDIO OR DIGITAL OUTPUT No audio output and no equalizer display, audio relays turnon.
SonySTRD2020
INTERMITTENT LOSS OF AUDIO Low current failure. Loss of audio signal all modes, and allfunctions. Tapping unit may cause or correct problem.
SonySTRD2020
MAJOR OUTPUT FAILURE - NO OPERATION Both units have the same failure shorted Q-702, 703, 704,705, 706, 707, 708, 709, 710. Defective IC-701, and open F-902. Alsoapplies to serial number 801035. Have not been able to determine whychannels are being wiped. We have noted poor and open sol
SonySQD2020
NOISE IN R CH The unit was making clicking noise in R-ch back output evenwhen the master volume control is minimum.


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.

Verifique se o esquema está disponível na área de downloads