Where can I buy main board for Sony kdl 40 xbr4

6 red flashes- backlight issue, bad main board, or power board or inverter boards- check standby volts on power board. "backlight on" volts should be 3-5v from main logic board then 24v to inverter


Have this from a youtube link find BUT
Better is to look first also on bad leaking or bulged capacitors thats better to replace in the bad components to get a repair because active components died on bad capacitors but after a while because on the build-in protection circuit by faults like deformed or leaking capacitors and even several fuse resistors then after replace a complete board again after a while you will may be get the same kind of problems again, take If you find some or much bad capacitors replacements 10 volts dc higher . begin with control on the power supply first of all.



Sony Bravia TV kdl red blinking led light error codes solutions Sony KDL 40XBR4 KDL 40XBR5 KDL 46XBR4 KDL 46XBR5 Service Manual

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this is true, check the main board to the power supply board voltage should be 12volts and 5 volts and 24 they should be marked by the plug ,if voltages are there then the main board is your problem,./

There may be no horizontal ouput, Check C515 & 516 and the jungle IC, IC206.

Hope that helps

Sony has extended warrenty on 46 XBR4 & 46 XBR5 for picture anomalies - like yours. Check with Sony customer service. Good Luck.

Could be the power board or main board defective, but I suggest you do firmware update first. Go to http://esupport.sony.com/US/perl/swu-list.pl?mdl=KDL42V4100&LOC=3#div_pos_30 download the software.

you're LCD panel is gone. To replace it...$1500-$2K. But there is a silver lining to this dark cloud. No pun intended. Sony has posted on the US and Canadian site they will repair the XBR4 at no cost! i have the link right here. http://www.sony.ca/view/882.htm Canadian. http://esupport.sony.com/US/perl/news-item.pl?news_id=378&mdl=KDL46XBR4 USA.

It claims its the 46" but it appears to be a 40-52" problem. If you have an extended warranty it will pay for it.

Ur Main tuner signal board is dead.Tries websites Shopjimmy.com,Ebay.com to buy a refurbish Tuner Signal board for the replacement.

It can be replaced, but it is probably going to cost you more then the cost of a new TV to do it.

Read the tech tip I wrote on this very subject.

http://www.fixya.com/support/r3831376-when_cracked_lcd_led_or_plasma_tv

A 6 flash failure indicates a backlight problem, either from the backlight inverter board or the backlights in the panel failing. There is a simple problem that sometimes causes this; loose screws holding the boards in place. You can try removing the power, taking the back off the set and tightening down the screws that secure the boards to the frame. the screws are aatually a ground connection and if they are loose it can cause problems. if this doesn't help, you will need a tech to look at it.