Have picture, but no sound on Mitsubishi diamond series tv, about 10 yrs old.

SOURCE: picture and sound go out but osd still works. at

formatter board failure

SOURCE: I have the mitsubishi hdtv 65

There are two convergence integrated circuits that have to be replaced. The center printed circuit board has to be removed to unsolder the chips. You might want to refer this to a local Mitsubishi servicer.

SOURCE: Mitsubishi model wt-46805 clicks on, green light

tmueller384,

See my tip at http://www.fixya.com/support/r6396176-projection_tv_troubleshooting for troubleshooting help.

Thanks for using FixYa and for the great rating.

hardrocko

Steve Burt

• 245 Answers
• Posted on Jul 28, 2011

SOURCE: I have a Diamond Series

If it's a little bit of ghosting, you can adjust the convergence just in the convergence menu. If it's very serious...

How to fix your convergence issue.

To fix a convergence issue, you must understand what you're fixing when your T.V.s picture caves in on itself. Some say it

looks like a 3D image, some say it looks bowed, but what ever you call it, you have a problem that isn't going to fix

itself.

Okay, what happened?

Your rear projection T.V. operates very similar to an older style glass screen CRT/Direct View television. Pretend if you

take 3 of those old glass screen T.V.s gave them all their own color being green, blue, and red, and put them in a box with

a mirror to reflect onto a screen. That's basically what's happening in your T.V. Your issue is that the three CRTs in your

T.V. aren't lining up properly due to a malfuntion in your T.V.

If you're uncomfortable getting your hands dirty, I understand. Call a T.V. repair technician, it'll cost you between 260-

400 dollars depending on the model of T.V. you have.

Before you begin, you must realize that this is not a rookie fix and it does require the skill of soldering.

Tools you will need.

1: Phillips screwdriver/drill
2: Permenant marker
3. Soldering Iron
4: Solder Wick
5: Heat Sink compound/grease
6: Multi Meter (Optional)

Parts Needed
1: (2) Stk392-110s
2: High Wattage Resistors (maybe)

You can find these parts on E-Bay for reasonable prices.

Step Zero:

Plug in your T.V. Look at your problem. Turn the T.V. off. Unplug your T.V.

Step One:

Mark all the connections you have going to your T.V. Ie. Xbox, Cable wires using a marker, or write it on a piece of paper.

Step Two:

Unscrew the back of the T.V. Get the cover off.

Step Three:

Look for the deflection board. Usually it has a flyback on it (the unit sticking out of the board with a big red anode

(wire) that goes into a splitter located higher on the TV usually.) What you're looking for is the part of the board with 2

identical silver heat sinks that hold 2 big ICs. The STKs usually have 2 screws on each of them holding them to the heat

sinks.



Step Four:

Now you'll need to get the old STKS out of the board. To do this, you usually need to remove the board from the chassis.

Remove all the connectors marking where each of them went (the connector and ports). As far as the flyback, you may have to

disconnect the main wire from the voltage splitter. Take the rubber cap off and push and turn like you're opening a bottle

of asperin. It should pop out. As far as the thin wire is concerned you usually can give this one slack by removing it from

the little twist clips it's connected to.

Step Five:

A: You have the deflection board removed. Find the STKS. Unscrew the STK screws. Desolder the STKs from the circuit board.

This is a good time to see if any resistors look burnt. If they are you will need to figure out the values and replace

them. Be carful and take your time desoldering these.

B: Put heat sink grease on the metal part of your new parts and fit them where the old STKs went. This may take a minute to

line up all the pins.

C: Screw the STKS to the heat sink and then resolder them to the board.

Step 6:

Put the board back into the T.V.

Reconnect all the wires you marked earlier. Replace the anode (red wire) to the voltage divider by just pushing it in and

making sure its not going to come out just by slightly tugging on it. If your set had 4 black clips on it, clip those back

onto the board as well.

Step 7:

Double check your connectors. Don't forget to put any back in and make sure they're all in properly.

Step 8:

With the back off, hook up your cable box. Plug the T.V. in. Turn on the T.V. with the remote. Be prepared to unplug the

T.V. in case you did something wrong. If it's running properly for 20 seconds, go look at the picture.

Should be all straightened out.

Step 9: Screw the back on again and reconnect all of your inputs.