Dicas Reparação




Modelo - Chassis KV2690R


Pesquisa: KV2690R Enviar Dica Resolvida
Resultados 5
Pedir dica reparação
MarcaModelo
(Chassis)
SintomaCausaSoluçãoPor:
SonyKV2690R
VC LOCKED AT 30V - NO TUNING, REPLACE MEMORY IC-105 VC locked at 30 volts - no tuning. Clock, data, latch pulsesare present. Tuner ok with external VC.
SonyKV2690R
IC-301 SUBSTITUTION, SEE SB CTV0236 AND TVP0025 When replacing IC-301, the substitute part does not work. -HQ COMMENTS: We have two service bulletins which pertain to the above.Please refer to service bulletin No. CTV0236 and TVP0025 (CSV-1).
SonyKV2690R
NO PIX, SOUND, SHIELD ON REMOTE HEAD AMP SHORTING 5V LINE No sound or picture. Low 5V line.
SonyKV2690R
AUX. APPEARS ON SCREEN, SEE SB #208R AND S/M SUPP #1 Problem is AUX appears on screen, not supposed to. Theproblem is like in the KV-2670R, that we had. This happens approx. everymonth. The servicer goes out with a remote from a KV-2675R and turns itoff. After a month it repeats itself. -HQ COMMENTS:
SonyKV2690R
NO TUNING, REPLACE C-140 ON A BOARD High voltage would come up at turn on but no tuning functionscould be performed. Found C140 on busy line between memory chip and PLLcontroller chip was partially shorted which was lowering voltage at Pin 30of PLL, indicating a constant busy.


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