Question about Sony Grand WEGA KF60XBR800 60" Rear Projection Television
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6 red flashes for sony WEGA Rear projection indicates the following....
A 6 flash shutdown on this set is a low B+ shutdown, usually caused by an open thermal fuse. The fuse is a small black plastic device mounted right above or just below the lamp. It usually fails when the fans become clogged with dust, especially the squirrel cage or sirocco fan mounted on the optical block and used to cool the lamp.
There is a Thermal fuse that has blown. Simply replacing the fuse may not clear up the issue... as it may blow again if there is a large dust build-up or a faulty cooling fan.
There is no way to tell if the fuse is blown by looking at it. It is a small black plastic device, maybe 1/8 of an inch square. The only way to tell if it is blown is to measure the resistance of the fuse. High resistance or infinite resistance means the fuse is blown, low resistance (under 1 ohm) and the fuse is good.
The fuse is only accesible by removing the back panel and further removing the optical block from the set.
If you are willing to open up the set - and have the knowledge to discharge the stored electricity - go for it.
The cost to repair is mostly labor. I would estimate between $250 - $350 in labor. The part is cheap, no more than $20. Please PLEASE disregard any writing you see on the net regarding just disconnecting the old thermal fuse and plugging in the new one without removing the old fuse and properly remounting the new fuse. This is a safety component and if you do it the way I have seen some people suggest, I would make sure your fire insurance coverage is good. If you wanted to do this yourself, the proper way is to remove the optical block from the set so that the old fuse can be removed and the new one installed AND the fan can be taken off and cleaned to prevent a recurrence. The first thing I would suggest is to get a service manual as it has good instructions for taking the set apart.
You could have a power supply problem causing the 6 flash shutdown, but that is rare on these sets.
We never suggest opening up a TV for first timers - as there are potentially lethal amounts of stored energy that need to be properly discharged before attempting repairs.
Thanks for using FixYa.
Posted on Jun 29, 2009
Diagnosis: LOW B OCP/OVP (Overcurrent/over
voltage). Possible causes: +5 line is overloaded. (A, B boards), +5
line is shorted. (A, B boards).
pls contact a technician to check these
Posted on Jun 29, 2009
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Posted on Jan 02, 2017
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