CurtPalme.com Home Theater Forum

deronmoped · Joined: 03 Nov 2006 Posts: 1154 Location: San Diego

On my 10PG the PA connector on the deflection board keeps needing me to re-seat it. I went as far as pulling the connector apart and soldering the leads inside the connector to each pin. Then I tightened it up so the plug would go on with more tension. I figured that should do the trick, but I'm still having to re-seat the connector. I'm about ready to solder the leads right to the pins on the board.

Now I have my red convergence shifting and I think that connector on the deflection board is causing problems.

I have not resorted to using any chemicals on the connections, have no idea how good they work.

Any suggestions?

Thanks, Deron.

stefuel · Posted: Sat Jun 05, 2010 9:50 am Post subject:

Can you get at both sides of the board? You might have a bad socket or a bad soldered joint at the socket for that connector on the board. It would really suck if you went through all the work of direct solder to the board only to discover that your re-seating corrected something else close to the socket like a STK chip on the way out. I'm not sure of the layout of a 10 PG but if you can see the STK chip for convergence, you can check it with a pencil eraser. while looking at test patterns on the screen (best to do with a second person) press on each leg of the chip with the eraser end of the pencil. Most STK's fail with one or more legs becoming detached inside the chip. If the test pattern jumps at all you need a new chip. If that's the case, I hope you have good soldering skills. If not up to snuff, ship it off to Curt.

One thing of note: Not sure if this is still a problem but a few years ago, there was a bunch of aftermarket (clone) STK's that blew dog. Make sure you get a real one.

**Curt Palme** · Posted: Sat Jun 05, 2010 1:48 pm Post subject:

No, you either have bad yoke connectors that need cleaning, or the C board is on the way out.

stefuel · Posted: Sat Jun 05, 2010 5:43 pm Post subject:

"or the C board is on the way out."

Last time I looked that's where the STK for convergence is located Idea

deronmoped · Joined: 03 Nov 2006 Posts: 1154 Location: San Diego

Well it was the C board.

Tried cleaning up the connectors first, that made no difference. Replaced the C board and that took care of it. Turns out the STK392 had been replaced before, can not remember if I did that years ago.

I was running a little static convergence on the Red and Green because I was being lazy. I set it up with zero static convergence this time, that may add a little life to the replacement board.

Thanks guys, Deron.

**Curt Palme** · Posted: Tue Jun 08, 2010 12:57 pm Post subject:

If the set wasn't shutting down, check for bad solder joints on that board. I've changed dozens of chips over the years only tro find a cracked joint on the board somewhere. POS boards, the definite weak link in the PG sets.

deronmoped · Joined: 03 Nov 2006 Posts: 1154 Location: San Diego

Dam, you could be right Curt, I took a quick look at the all the solder joints and the ones for projector installation orientation look stressed. Going to have to redo them and see what happens.

Deron.

deronmoped · Joined: 03 Nov 2006 Posts: 1154 Location: San Diego

Well I still have the red convergence problem.

I swapped out the convergence board, I though that took care of the problem but it's back. I'm back to thinking it's the connector on the deflection board. I moved it and the red convergence jumped back into position briefly. I tried re-soldering the connection on the board, that did not help, cleaned and re-seated the connector, no help there either. I going to try and pull the connector apart and solder the wires to their individual pins, instead of relying on the factory crimp connection.

Deron.