Dicas Reparação SONY




Modelo - Chassis


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SonyBE4 Chassis
Int trips off - led flashing 6 times Blue screen momentarily at sw off - int s/c in crt
SonyBE4
Txt can't be selected - nothing happens when you tryEnter service mode, and at the "TT" prompt type "18". This will turn teletext on or off depending on how it was originally set. Sets which do not feature teletext or have the wrong version of IC001 fitted will only display P100 when teletext is selected.
SonyBE4
Reverts to st/by at sw on with 6 flashes from LEDover-current protection circuit (Q600, 602) is operating, usuallyprobs in LOP. To identify the cause, first dis FOP chip (IC501). If set switches on with frame collapse, replace IC501. If set fails to switch on, dis HT feed to LOPTx. This should give 4 flashes of st/by LED (no horizontal fly-back) showing that problem is in LOP. Check LOP comps before condemning LOPTx. If st/by LED continues to flash 6 times even with LOPTx disd, check R620 (270K) & R622 (470K) in over-current protection cct.
SonyBE4
Pic displaced down by 2cmVolts on Q500 & 501 way out - Jungle chip MC44007P faulty
SonyBE4
No txt or OSDR081 o/c, C810 also failed
SonyBE4
Field collapseNo 24v supply to IC501 - R814 0R47 ¼w fusible o/c - improved type 1-249-443-11 introduced
SonyBE4
Dead - LED flashes 6 times then repeatsOver current problem - Loptx u/s
SonyBE4
Dead - LED blinks 6 times (Field fault)TDA9302H FOP chip dry jointed and u/s
SonyBE4
Dark picC823 0µ022 250v leaky in beam lim cct
SonyBE-3E KV32FX20U
sound crackling, "NICAM" appears on screenreplace X201 18.432MHz on A PCB (176062811)
SonyBE3E KV28FX20
No chan change unless menu pressed firstEPROM chip corrupted - ok once set was autotuned again
SonyBE-3D KV32WS2U
low/varying heightC616 1000uF 25V in PSU
SonyBE-3D KV32WF1U
stuck in stbyQ812 (872904286) s/c, D802 (871903849) s/c, LOPTx (145325711) u/s
SonyBE-3D KV32WF1U
no soundfuse PS602 N75 o/c, IC1200 TDA7264 s/c, mute transistors Q1200 2SC1740 and Q1201 DTC143TS
SonyBE-3D KV32WF1U
no pic or sound, PSU screamingLOPTr Q802 2SC5251 s/c


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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