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Sony Repair Tips




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Search: sony
Results: 20100
Make Model Symptom Problem Solution By
SONY KV2602
Retrace lines in the picture, replaced l503 Retrace lines in picture.
SONY KV1952R
Green screen, hvr Green screen.
SONY KV1952R
No display, replace zener d2003 and q2007 Original complaint was display out. found channel displayonly partially lit during channel change, and sound up would cause pix upto change at the same time. also, channel up or down would cause sound tomute. traced sound problem to ic2001, pin 10 - p
SONY KV1947R
Incorrect sound mute, replace ic001 Sound would intermittently go off and if you changed channels,the sound would come back on. problem was being caused by the mutefunction of ic001.
SONY KV1946R
No operation except power, leaky d010 Unit would not respond to hand unit other than to turn uniton. after set was turned on, no other remote function would work.voltages at pins 24/25 of ic001 on me board too high.
SONY KV1945RS
Shut down, replaced cx-557s and adj r563 Set would work ok for hours then shut down.
SONY KV1915
Purple color Purple color shows up on and off. problem is intermittent.i saw this problem more than 3 times in newer model. crt pins do not makegood contact in socket of c board.
SONY KV1910
Retrace lines on the screen Vertical retrace lines were seen on the top of the picture onchannel 2 and 4.
SONY KV1746R
Intermittent shut off Unit came in with complaint of goes off intmtly and blowsr232 fusible resisotr. servicer changed q205, q206, c238, r212, r246.after all components changed unit went out again and in further investiga-tion, found r231 had 330Ω instead of 10k as schema
SONY KV1546R
Bloches in pix and unstable, changed value of r555 to 82k Screen has oval blotches with no info and will increase insize with signal received. originally had 100kΩ res. installed, aftercomparing with a kv-1547r with a 30p chassis we noticed it had an 82kΩ.
SONY KV1514
Black bar on the screen Black bar, about 3/4 inch wide on left side of screen. blackbar would start bottom left corner and extend diagonally to top. byhitting front of pix tube i was able to shift bar from left to right, incheach way.
SONY KV1222R
Doors do not stay closed The tabs on the front door that fit into the spring loadedlatch on the mask are not long enough nor are they notched. the doors donot stay closed but rather flop open. the tabs on units whose doors stayclosed are longer and are notched on the right han
SONY KPR4600
Convergence distortion, replaced ic-5505 Unable to correct severe keystone error of red and bluepattern. red was more severe. waveform at base of q5510 and q5517 wasdistorted, namely the right portion of vertical deflection was missing.this distortion was traced back to output of ic5505.
SONY KP5040
Intermittent mechanical operation, replaced ic6502 n s953 Intmt operation of the mirror assy which was not related tothe load on the motor/mechanism. the tubes were lubricated and movedfreely, mirror was removed. actually the voltage to the motor droppedfrom normal 25v close to 0v and the motor would coast to
SONY KP5040
No channel lock, incorrec ic001 This unit would not skip channels or operate on uhf onchannels 83, 84, 85. the tuner switched back to vhf-low operations.we found the incorrect upc installed. it was upd553c-056.
SONY KP5020
Noise lines on the screen This unit produced a drive line at the left side of thescreen on all three tubes. this was also radiated to any nearby sets.the problem appeared to be located on the board. however we found thedrive line to be caused by a noisy stopper diode - d5313.
SONY KP5000
No channel lock, replaced q2207, q2208 When programming the set, tuner would not stop on thechannels. we found a constant h (12v) at pin 4 of ic2202 (neon drive).we traced the problem to a leaky q2207/q2208 sync detect/clamp circuit.
SONY KX2501
Shutdown, replaced q653 Set would work for about 2 minutes and then q652 would getvery hot and short out. inspection revealed e to b open on q653, pulseamplifier.
SONY KX2501
No power, replaced c657 Q652 shorts at turn on, extremely difficult to service thispower supply due to immediate failure at turn on. used the followingprocedure to repair the set: connect 22vdc to junction of r667 and r677.also connect jumper from this point to 320v line. co
SONY KX2501
Squeel, replace pot Customers are objecting to the 15,734khz squeel. the noise ismost evident when the viewer is adjacent to or 45 off axis to the set, andduring the first 10 to 15 minutes of operation from a cold start.