Home Theater Forum and Systems banner

Sony KDF-E42A10 blinking red power/standby led

34928 Views 7 Replies 5 Participants Last post by  charbo6
Set turns on , power/standby led blinks green several times, changes to red and blinks 3 times in sequence forever, no picture or sound. Owners manual says "contact a Sony Service center". Anyone have a clue as to what might have failed. I'm the original owner, the set has been problem free for 5-6 years, worked great until yesterday morning.:scratch::yikes::dontknow:
1 - 8 of 8 Posts
According to the service manual, a sequence of 3 blinks indicates a lamp door or lamp problem. So I popped open the lamp access port, opened & closed the lamp door, put everything back together, nothing changed. Next, I repeated the above, along with removing & reseating the lamp assembly itself. Re-assembled everything, & the problem was solved. Apparently, the lamp assembly had somehow come loose by itself. Or, the lamp door latch & associated micro-switch just needed to be cycled several times.:flex::clap:
  • Like
Reactions: 1
That set and many Sony's have 2 switches in series. One on the lamp door, and one directly under the lamp. The one under the lamp usually causes the 3 code, the lamp only has to flex a few mm and it breaks the switch contacts.

If you have an ongoing problem with this, check that the switch under the lamp hasn't come loose, it has a small screw holding it in position.

I fixed my TV

my lamp blowup and I got a new one from amazon, It's an original one from Philips and came with casing.
I changed the lap very easy and did some cleaning, The TV turned on for a few minutes and then it shut off and the power light blinked 3 times and if i tried to turned on again it just turn the power led green and then it start to blink red three times. I tried removing the lamp several times and then put it on again and still had the 3 red blinks. I leave it all night unplugged and try the same (remove lamp, turn on TV) and at first it turn on but in a few minutes it shut off and start to blink red again.

So what I did is changed the lamp casing of the new lamp to the old casing, and that seems to solved the problem.

I noticed the old casing has some metal in the interior of the lamp area and the front crystal fits tighter. I believe that the new casing was overheating and the TV was protecting itself and tuned off.

also vacuum all the fan area and the inside of the light tunnel helps.
See less See more
If the case of the new lamp doesn't contact the switch under the lamp, you get a 3 code. Those switches are also prone to failure.
1 - 8 of 8 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.