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Re: Replaced Lamp to no avail
That problem is caused by two bad 100Uf capacitors on the PWB . you will need the manual to be able to get the chassis out and I dentify the correct board. Go to this link get the reapair manual they will give you free tech support and when they email your manual ask then if you can have Sonny for your free support. He can fix that chassis in his sleep, and he will tell you the exact capacitors that need to be changed and you set will be as good as new. heres the link http://servicemanuals.vstore.ca/
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Usually 8 flashes means the lamp is not lighting.
When most lamps go bad , they physically crack because of excess heat.
The problem is probably the lamp or the ballast, which makes the voltage to light the lamp.
Replace lamp and remember to close the lamp access door after replacing, because the lamp will not light if the door is open an
Blue led light lit solid and yellow led light flashes is an initial attempt of the set to re-light the lamp.Red led flashes and yellow led light solid means that the lamp won't light up that's why it only has sound without the picture. Since you've replaced the lamp twice and still the symptoms persist, I suspected that the fault came from the ballast board and not on the lamp itself. If the ballast board gone to malfunction, there's no high voltage will produce to light up the lamp and will sensed by the processor and trigger the error code (Flashes/solid led light with color code).
To verify whether the ballast board is faulty or not, check if the lamp will lit by looking through the lamp door louvers at the rear of the cabinet upon turning on the set. Please let me know what you will find to assist you further.
Hi, have you replaced the lamp after 2-3 yrs of usage? The lamps used by mitsubishi tend to last around 4000 hrs 1-3 yrs.It is common for the green light to light up.Other common failures are the ballast which is the board that powers the lamp.Also check if its not overheatin, dust out the fans.Heres where u can get the lamp or ballast http://www.discount-merchant.com/SearchResults.asp?Search=wd-52631
Hello. Ballast in Sony is one of the most reliable parts, almost never goes bad. I assume you have TV unplugged from the wall outlet to reset error memory (not to mention that you have to do it anyway during ballast replacement). I hope you are using good quality lamp, because cheap substitute from E-Bay can cause same problem. Lamp and ballast works as duo and on-board diagnostic system is unable to separate them unless lamp is completely blown (in that case you will have steady "Lamp" LED blinking). You need to set TV up with back cover removed but lamp door attached (there is switch that prevent TV from working if lamp door is removed). You need to locate large 2-wire connector on ballast and make sure that it's getting about 330V DC from power supply board when you turning your TV on. If it's not there - you have power supply board problem. There should be fuse on it (not on the ballast board but power supply board - just trace those two thick wires where they coming from). That fuse could be blown by previous bad ballast shortage. Small connector on ballast have 5 pins. Some of them ground, one of them steady 5V and another trigger (turn on signal) 5V. Make sure all voltages are there. If there is no trigger 5V - you have problem with main board. In my experience 90% cases - it is very bad quality new lamp or something is just not connected (forgot to put plug all the way or something). Good luck! Russ.
If you have a voltage meter you can pull the bulb out and check for continuity by placing the probes on the power plugs of the bulb. If you have continuity the bulb should be good, and it may be the lamp ballast.