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Sony Repair Tips




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Search: sony
Results: 20075
Make Model Symptom Problem Solution By
SONY SLV676UC
Won't come on after power interruption After a brief power interuption (unplug and then plug backin), unit would be inoperative. +5 volts was present but no clock displayor any functions.
SONY KV2648R
Unit is inoperative, open r-607 Q-604 turned on disabling the oscillator on the power supplysection. the base of q-605 is 2 volts thereby allowing q-604 to conduct.i found out that r-607 is open.
SONY KV19TR20
Inoperative set, replace c-563 & r-568 Inoperative set. no horizontal osc function. ic-301 is inop-erative due to no 9v line. inspection revealed horizontal output circuitinoperative due to open r-568. replacing r-568 restored high voltagebut set was in high voltage protect mode. pulse o
SONY TCRX80ES
Incorrect part number in service manual (ref.# 908) The part number for the (us) system control pcb, ref. no. 908,listed on page 25 of the tcrx80es service manual is incorrect. theincorrect part number is a-2056-460-a. -hq comments: use the part number shown on page 30 of the tcrx80esservice manual, ref
SONY SLV585HF
Unit cuts off and on Unit cuts off and on. during play mode. power (front panel)light stays on all the time.
SONY CDX7520
Receiving incorrect part: l401 68uh inductor When l-401 is ordered, replacement from kansas city will notfit. original part is axial type in shape, while replacement is radialtype and will not fit under cross brace of main board. -hq comments: the radial type inductor which you received from npc
SONY SPP120
No dial tone - no side tone No dial tone and no side tone but the hand set will transmitto the analyzer. signal was being stopped by defective c-609 before itcould enter ic-303 pin 8 (telephone line duplexer).
SONY TAM30
Unit locks up When applying power to the unit without a tape in the deck,unit does a quick reset and gives an error detection signal. this was anindication that the micro was trying to perform a mechanical function.scan pulses were found on ic-3 pin 58 telling the mi
SONY ITA305
Low hum in unit Unit had low hum when trying to break the dial tone and therewas also no ogm. this was the result of the power supply voltage beingpulled down to 8.5 volts. ic-606 was internally leaking to ground. vccto ground was approximately 2kΩ. also credit
SONY TAM30
Intermittent line connect With the line cord plugged in, unit will grab the line in 60seconds (with audible dial tone) and then release the line in 60 seconds.this is a continuous cycle. this is caused by c-1 leaking which activatesph-1 and grounds pin 4. this in turn holds ic-
SONY TAM30
Acts like no power after key is pressed With line cord and power cord plugged in, the unit acts likethere is no power while performing ogm function. with line cord removed,ogm function can be performed. the cause was c-1 being leaky, which turn-ed on ph-1 and lowered pin 4 to ground holding
SONY ITA205
Instant hangup When unit answered the ring, it would grab the line momentar-ily and release it. ic-401 pin 19 was not supplying the .7 volts to thebase of q-106, which is necessary to operate the o.g.m. interupt detectcircuit. this in turn would not allow ph-604 to a
SONY ITA305
No answer Unit will not answer the ring signal. c-601 is missing fromthe pcb.
SONY SPP50
No side tone No side tone but handset does receive dial tone. the problemwas isolated in the base. defective c-71 was preventing side tone fromreturning to the handset. the capacitor was dried out which allowed theouter can to spin freely. also pertains to serial
SONY ITA305
Unit answers ring signal and immediately drops line When unit answered the ring, it would grab the line momentar-ily and release it. ic-401 pin 19 was supplying the .7 volts necessary tooperate the ogm interupt detect circuit and pin 2 of pm 604, but pin 1 ofph-604 was not being supplied with its needed
SONY SPP170
No talk Base will not receive because defective d-302 is pulling downpin 14 (ic-302) which is the charge pump output for the receive section.
SONY HSTV102
No audio from "b" deck The audio from the b deck was being muted. the voltages onic-501 and ic-502 were incorrect.
SONY TCRX420
Missing part number for play indicator led's No part number for led light indicator lenses (3) locatedabove the play buttons. the parts described above are not referenced inthe exploded view on page 16 of the s/m. the led's for the play buttonindicators are references d503, d504 and d505. the fr
SONY HSTV102
Intermittent left channel No left channel or intermittent left channel in all inputs,tape and tuner. found that when cn-601 and associated wires were movedleft channel was restored. also credit robert findlay with this report.
SONY CCDV801
Error in service manual page 137 On page 137 of the service manual it shows ic-910/pin 1 goingto both ground and 4.8v vdd through a 0Ω resistor. obviously, b+ andground are not connected together.