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Sony Repair Tips




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Search: sony
Results: 20100
Make Model Symptom Problem Solution By
SONY KV1911
Severe pin cushion Severe pin cushion, pulled in 2-3 inches on each side.checking 15 volt line found a negative h pulse on the line. found c810to be open.
SONY KV1747R
Sets will not lock on cable channels Set will not lock on cable channels. usually the 47 modelsand models with a similar chassis. i tried reducing the value of c208but this made the problem worse. we tried increasing the values of thiscap and found that the sets would perform properly wi
SONY KV1747R
Channel lock When changing channels, up/down with remote, unit would lockon channel 8 for approx. 8 to 10 seconds. unit would scan up/down allother channels with no problem.
SONY KV1547R
Picture blanks Set would play 15 mins., then would start blanking in and out.vertical would then start shrinking and soon would collapse.
SONY KV1520R
No volume control This unit had no volume up. we found d1117 to be ever soslightly leaky.
SONY KV1355R
Unit goes shut down mode, crack on board Any movement of cabinet would cause the set to go intoshutdown mode. i defeated the input to the shutdown circuit, pin 17 ofic501 to prevent shutdown in order to isolate the problem. the voltageat pin 16 of ic501 would increase when the problem occurre
SONY KV1221R
Intermittent turn off, replaced ic001 This unit would intermittently turn off. we found the remotedecoder ic (ic001) to be thermally sensitive.
SONY KP5040
Noise bar in the center of othe screen, connection change A vertical bar appeared in the center of the picture whenviewing a normal program. investigation of the circuit revealed that thelot transformer pulse seen at pin 1, of t504 on the e board wasdisplaced from its normal in phase relationship to the flybac
SONY KP5040
Mechanical incorrect operation, replaced ic6501 Drive voltage to the mirror door motor would not be removedonce the door had reached its end of travel. instead, the drive motorwould continue to ratchet.
SONY FD20A
Intermittent poor focus, replaced crt This unit had intermittent focus. the focus voltage wouldgo up to 900 volts.
SONY KX2501
Pic distortion on ch 7, add ground between "c" and chassis Oscillation left side of crt, 1 wide, appeared on channel#7 only.
SONY KV8100
Unit shuts down When turned on, unit would shut down. isolated problem tothe 22 volt line. it was reading 27 volts. found q602 regulatordriver leaky.
SONY KV3000R
Unit could not be powered on Unit could not be powered on. inspection revealed lack of12 volt dc to control circuits.
SONY KV2650RX
No picture, replace ic002 Vc voltage on chs. 2/3/4 was low - below 2 volts. chs. 5/6and all others were fine. found 4 volts at pin u on tuner.
SONY KV2647R
Picture distortion, replace c508 Vert. foldover and decreased vert. deflection becausecapacitor (c508) failed. this same capacitor is also failing in othermodels and quite frequently.
SONY KV2647R
S/m correction, voltage at ic-302 and ic301 Pin 8 of ic302 and pin 3 of ic301 show two different voltages,although they should show the same if they are directly connected, asshown on schematic. -hq comments: your are right. it should be the same (7.2v).
SONY KV1954R
Squeal, replace l502 Customer complained of squeal from unit. servicer could notlocate as problem did not show up when in service shop. worked withservicer and found we could duplicate problem by putting very slightpressure on the coil.
SONY KV1943R
Dead, replaced bridge diodes and filter cap Four times within the past 3 years customer has had to havelow volt diode replaced. found that only one diode at a time was beingreplaced. found filter cap leaky. replaced all 4 diodes along withthe filter cap to help prevent further customer aggravat
SONY FD20A
Need p/n for removing pin face screws Servicer has requested p/n for tool to remove pin face screws(p/n 3-314-055-00). tool kit catalogue recommends three types7-700-731-11, 7-700-731-21, 3-832-391-00. will any of these tools do thejob or are we coming out a new tool? -hq comments: a pair
SONY XR65
Malfunctioning ic303 Ams worked. display would not light up. ic303/q outputalways low.