This is a standard crt tv not a projection tv, it will come on cold and shut itself back off in a few seconds, the green power light stays on, if you turn it off with the remote and back on it will come on then stay on,
This sounds like a power regulator issue. Check the site www.TvRepairKits.com for a "shrinking and expanding" video kit for your model. It also fixes the random off/on when the tv is cold
SOURCE: TV shuts down
Remove the lamp assembly, There will be a screen on the top and bottom of the assy remove all dust from these screens. also check the tube at the top of of the lamp receptical this is an air cooling pathway. reassemble and fire it up. This worked for me and saved some serious coin judging from some of the other solutions I have seen (lamp and balast) ouch!!!
SOURCE: Projection TV keeps shutting down
I just took my Mitsubishi WS-65315 65" in to be repaired for the same problem and was told that it needed a new main circuit board part number 930b899005 as was told they wanted to charge me $1100.00. So I told them not to do the repair and picked up my tv and found that same part at Sears parts for only $225.00. Some of these TV repair places are theifs.
SOURCE: TV shuts itself off after a couple minutes of being on.
One must be very careful of the quality of the replacement lamp. Many of the cheap 'deals' on the web for replacement lamps are substandard. I always recommend that replacement bulbs be the original manufacturers bulb.
SOURCE: tv WONT STAY ON
When the power light comes on and then goes off perform the self check feature the model you indicated has:
On the front of the press and hold both the MENU and INPUT (DEVICE) BUTTONS both for at least 5 seconds and release both buttons.
The green power light should blink a two digit error code--most common is 2 blinks, a pause and 2 blinks.
Let me know what error code you find and I will tell you what it means.
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SD TECH
could be three different things.
1. could be the crt itself as a tube with dfective phosphure wil do this
2. could be the vertical ic on the crt board
3. could be the focus pac. located in front of tv with 6 adjustment knobs on it.
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