Question about Sony KV-36XBR400 36" TV

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KV36XBR400 fragmented picture horizontal overlapping lines

Have a KV-36XBR400 since 2001. works great until recently. Picture is clear on start up, then after first minute, picture is fragmented into multiple horizontal lines overlapping in center of screen.
like horizontal/vertical hold is not right.

If left on, about 30-45 minutes it clears itself up, or a little vibration (swift bang to top of set) seems to clear it up temporarily.

Once picture is clear, it mostly stays that way until turned off. Some days it works, others it doesn't



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This will continue to degrade, almost any failure that can be affected or temporarily cleared up by hitting the set is caused by bad solder joints.

A good shop should be able to find and fix the bad solder connections for probably a little under $100
if you bring it to them and pick it up.

Posted on Feb 12, 2009

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This is a large heavy set, If you take it yourself to a shop you will save on the service call.

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you probably aren't checking this posting out anymore, but maybe someone else will see this and it can help them.

i was having the same problem, did a search and found this solution. worked like a charm!! go here:
http://www.floggingenglish.com/2008/07/22/diy-tv-repair-fixing-screen-flicker-on-a-sony-hd-wega/

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Hello, maybe there is a contact error in power supply or the deflection stage. If the resoldering does not help- here are some possible solutions: remedy Replace flyback location LP04. Entered for KV32S22 /SONY (Chassis) remedy 2 Replace IC351, Q602, Q601 (2SC4834M), R607 (1R/0.5W), R622 (10R), IC641 (SI3090CA) and Q502 (2SC5148). remedy 3 Replace tuner. remedy 4 Replace R607, Q502 and IC601. Entered for KV32S22 /SONY (Chassis) remedy 5 Replace regulator IC, R607, check C609, C610 (0.68pF) and C613 (0.0022pF/500V). remedy 6 Replace horizontal output transistor (2SC5148), IC601 (MX0841) and R607 (0.1R). remedy 7 Replace IC1701 and IC601. remedy 8 Replace Q501 (2SC5148), R607 and resolder horizontal driver transformer. remedy 9 Check and replace horizontal output transistor Q502 (2SC5148) and IC601 (MXD8411AB-F). remedy 10 Replace shorted R607. Also check T501 and Q501 for dry joints. remedy 11 Replace C608. remedy 12 Replace Q602 and D648. remedy 13 Replace Q502, Q601, Q602 and R602. Entered for KV32S22 /SONY (Chassis) remedy 14 Replace D626 (6.2V). remedy 15 Replace IC801 and R607. remedy 16 Replace horizontal output transistor and the associated damping capacitor. Check flyback transformer and SMD microprocessor as well. remedy 17 Replace R639 (4.7R/0.250W) located on G board in standby power circuit. remedy 18 Replace D600. remedy 19 Replace C502 (0.47uF/50V). remedy 20 Check D655(1N4937), D657 (1S1834) and Q601 (2SC4423). remedy 21 Check D606 for leakage. remedy 22 Check yoke between vertical and horizontal windings for S/C. remedy 23 Replace Q601 (2SC4834MNP), R607 (0.1R) and C517 (2.2uF/250V). remedy 24 Replace R611.

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2 Answers

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