Mitsu WS-65869 Repair Advice Needed

I have a 7 1/2 year old Mitsubishi WS-65869 which has functioned quite well until recently.

The power in our neighborhood went out for several hours, and when it came back on, the Green light on the set blinked continuously, and didn't turn off as it normally would after a power loss. Unplugging, System Reset, giving it time, etc. made no difference.

I researched this and found that Caps in the DM Module might be the likely problem. I chickened out on repairing it myself, and had a guy come. He took the 'guts' with him, and later said he replaced Caps in the DM Module, along with a bunch of other stuff (but who knows).

He came back, put everything back together, and it turned on normally, and I thought I was good to go. The next day, while watching TV, it abruptly turned off without warning. No blinking light. I tried to turn it back on: the Green Light comes on (with the usual spring-like noise), stays on for 1-2 seconds, and then turns off. Nothing ever comes up on the screen. Unplugging, System Reset, no change. Can't turn it on and have it stay on.

I am only $100 in the hole so far, paying the guy for the first service call, and he's sending me the $300 check I wrote to him for the rest, saying I can't help you any more.

So I need to figure out what to do next, or whether or not to sink any more money into this set. I otherwise love it, and really don't want to be a new one. So:

1. Any specific ideas on what the problem might be, and whether or not it will be cost-effective to fix?

2. Am I postponing the inevitable, and that like an ageing automobile, it might be time to just cut loose and move on?

Thanks.

Thanks Straybeat, but no joy - I gave it a shot, but it never does come fully on. The green light does come on initially, as I indicate above, but it turns itself off within a second or two, no matter what else I do with the remove.

Any other thoughts??

Interesting. What was your set doing? The same thing as mine or something different?

Was this in the DM Module or elsewhere? If you can describe where it is I can see about replacing it.

Yeah, that's the thread I found when I was first researching the problem, when it was the dreaded "blinking green light." I saw there that replacing the Caps in the DM Module might fix it. Having no soldering experience for this type of repair, I bailed, and had a guy come in to fix it for me.

But now, after whatever he did, I no longer have the "blinking green light" problem, as described in that thread. Now, the green light will come on for a second or two, and then turn off. A very different behavior.

That's why I was asking you what problem your set was manifesting when you fixed it by replacing that ceramic fuse.

And in fact, I've posted a similar question on that forum, as well as PM-ing the guy who started that thread, to see if he might have any idea how I might fix the problem my set is having.

Many thanks for the reply, hammerdwn.

I'm at my son's house for today and tomorrow, so it'll be tomorrow night before I can retrieve the code.

He took the DM board and the chassis as well, indicating that he replaced Caps on both, implied that he did something with the Convergence, although he wasn't real specific.

This is probably unanswerable, but what do you think the odds are of getting this set fixed in a cost-effective fashion? I really don't want to have to buy a new one, but this is a pretty good time to do it should it come to this. Unfortunately, I'll have to make that decision before I can get the error code if I want to take advantage of Black Friday savings.

What do you think??

OK, just got back, and tried your suggestion to get an error code, but after the tv completes its cycle (the blinking green light turns off), I get no response whatsoever when I press and hold the Menu and Device buttons, regardless of how long I hold them. No green light at all.

FWIW, a long time ago I configured the set to turn off the front panel (too many grandchildren around to press buttons) - would this explain this? I figured all that had been done, along with the system reset, would have undone this, but there is no response to anything on the front panel. Not even the power button will respond. The remote works fine to try and power it on or off.

I tried pressing and holding the Menu and Device buttons on the remote, but no joy.

I'm doing some searching, but so far have not seen another way to get any kind of error code.

Is there a way of 're-enabling' the responsiveness of the front panel? Something lower level than a System Reset?

Thanks. And I agree - it is strange that the repair guy completely lost interest. But then again, he was a strange guy to begin with...

Update:

I managed to re-enable the Front Panel (held down the Power button for a long time - I think that did it). Now when I hit Device + Menu, I get the following:

1. After I unplug the TV completely, let the green blinking light do its things, and then when it goes off, I get the Error Code "12" which apparently is a "No Error" code.

I then hit the power button to turn the TV on, as before the green light goes on for a second or two, and then it goes off by itself.

If I then hit Menu + Device, I get Error Code "22" which according to one site I saw is "Short Protect Circuit."

What does this mean in terms of where the problem is, and how it might be fixed??

Many thanks.

Doing this myself is problematic, as this is beyond my range of experience at this point. If it's not too involved, and someone can provide reasonably detailed instructions on what parts I'd need, where to get them, etc. I might be willing to give it a whirl myself.

A more realistic approach would be to get another repair guy in here (I have another I've been speaking with). What would be a reasonable estimate on cost of parts and repair, assuming he finds what you're suggesting?

Thanks!

Thanks. I'm reviewing that and other info to see if it would be a mistake to try and do it myself. As with other new tasks in life - I'm sure I can master the skills and knowledge involved, but it's a question of whether or not I'll do more damage during the learning curve that might justify paying someone to do it.

$350 to $400 is a lot, though, and would go a long way towards a possible replacement (I was looking at 55" LCD's - Sony and Vizio) for around $1600, or even a Mitsu 65" DLP Rear Projection for the same dollars.

I hate to resurrect this old thread, but I need help again.

The last problem is documented in this thread. With the help of a friend, we repaired the set by replacing the 2 pico-fuses and the Convergence IC using the instructions here:

http://www.techlore.com/article/2253...subshi-TV-Set/

It's been fine for the past 2 1/2 years. But this morning, I turned it on, and the blue channel showed a marked warpage/misalignment in the upper left hand side of the display. I went to switch it to the DVD input to start trouble shooting the problem, and the TV turned off.

I have tried reset, unplugging, etc. It will have the fast blinking green light for 70 seconds, as it should. If I try to turn it on, the green light comes on for about 2 seconds, then turns off.

I cannot get any response from the front panel: hitting Menu+Device for > 5 seconds should yield an Error Code. But nothing happens. I have the Front Panel controls disabled to prevent grandkids from causing problems, as I did the last time around. My post above indicates I was able to re-enable it by holding the Power button for a "long" time, but this isn't working this time, no matter how long I hold it.

Any suggestions on how to at least diagnose the problem (by re-enabling the front panel, or other means)? Or is the writing on the wall?

Any suggestions greatly appreciated.

Minor follow-up: I found that holding down the Menu button for 8 or more seconds will re-enable the Front Panel. Doing that I can now get an Error Code: 22. That's the same code that I got last time when I did that repair.

Is this Error Code pretty specific in identifying the problem in those same Pico Fuses and Convergence IC? I guess we can try it again.

Any other thoughts appreciated.