sony Repair Tips




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MakeModel Ch.SymptomProblem SolutionSolutionBy:
Sony KV32S10
Relay clicks continuously at switch onReplace Flyback
Sony KVM2511 AE1
Can not switch on the set, supply okSuspect L807 of o/c Pt no. 140750400 also check R008 and C017
Sony KV27EXR25
No raster, the set will click on but no high voltageReplaced IC651 on the power board type STRS6301 Note: Use an original STRS6301, not an STRS6301A unless the 6301A comes from SONY This part does run very hot
Sony KVA2542
Fault not limited to this model. Turning itself to standby, mostly when warm. Flashing error code on LED's.Dry joint on IC TDA8179 under metal shield. May need replacing with STV9379. May also need to alter picture geometry settings HSIZE, HPOS, VSIZE, VPOS in service menu
Sony FE-1
Set shuts down shortly after start up with standby led flashing 2, 4 or 5 timesCheck / replace chip resistors R543 47Kohms and R541, R573 and R575 all 100Kohms
Sony FE-1
Changes channel or volume adjusts by itselfCheck S900/1/2 on pcb H1, alternatively this could be due to failure of IC005 CD4052BCM-FL63 on pcb A
Sony FE-1
No power no standby power supply opIC609 TOP209 was faulty, also checked C640 47uF, 25v, D631 MTZJ-12B, D628 P6KE200, D629 UF4005PKG23 and R627 4.7ohms, 5%, 0.25w as a precaution
Sony KV20TR22
Intermittent reception on VHF / UHFResolder tuner especially the around the tuner I.C
Sony BE3D
Picture too big, maybe strange colors, shuts down after a few secondsCheck for shorts in IC606 9V voltage reg
Sony BE1
Loss of sound when set was cold / extremely distorted sound when cold after set was turned onSound recovered within a few minutes of turn-on and was then normal. Check the electrolytic capacitors and diode near to the audio output IC heatsink. 100% rectification was achieved by replacing the diode and small value electrolytics in the immediate area of this IC's heatsink
Sony KV2020
No SoundReplace sound i.c TBA120U
Sony FE-1
No picture or dark pictureCheck R516 56Kohms, 0.5w or R517 27Kohms, 0.25w for high resistance or o/c
Sony FE-1
Excessive widthThis was due to Q532 2SK2251-01 being s/c, it is advisable to also check other EW circuit components as a precaution
Sony KVM1400
Will not power up, red LED blinks twiceReplace ICP fuse in HT line PS801 N15, 600mA mounted adjacent to pin 7 of LOPT
Sony KV2165MT
Main fuse blastedReplace the STR50115
Sony FE-1
Band of interference down left of screen on dark scenesThis was cured by adding a 1000pF, 2kV capacitor part no. 1-161-731-81 in parallel with D539 in the EW diode modulator circuit
Sony FE-1
Loss of one colour with teletext and on-screen displaysCheck the appropriate 2SC2412K transistor Q007 green, Q008 blue or Q009 red
Sony KV28WS2U
No sound, speakers pop out if volume is raised from zero. Audio output from Dolby A1 board at +5v dc.Lightning damage to this set and connected VCR. Centre/surround amplifier IC shorted blowing IC protector to its negative rail. Both amplifier ICs replaced as a precaution. No damage to Dolby A1 board
Sony KV-25M80 BG-2
Dead5V Supply Transformer Short
Sony KVS3432U AE2
Front led flashing 13 times, HT at first came on at 139V then went to 75V going off etc shuting back down in protection modeFound R854 open circuit on -15 volt line off line output transformer