Question about Philips Magnavox 51MP392H Rear Projection Television

1 Answer

Blue Convergence just went out?

Last night, while watching a movie on our 3.5 yr old 51MP392H/17 Magnavox, we noticed that the picture in the lower left corner and upper right corner was getting yellow. This was true in High Def as well as "normal" t.v. mode. Tried the Convergence, manual convergence & even the old "restore factory settings". The red convergence is perfectly alligned, but the blue (it won't let me adjust the green?) while very sharp & centered in the center of the screen, but at the upper right and lower left, the blue and green +'s were way out of allignment, and even tilted. We attempted to adjust manually, but while I could get them to move left to right, I couldn't get them to move up or down. The problem seems to be getting worse each time the t.v. is turned on (and of course, being Friday the 13th....). We can't afford the $100+ for someone to come look at it, and my husband is very knowledgable about some electronics (and I can rebuild computers) - is there a fix / test we can do to a) figure out what's wrong and b) hopefully fix it ourselves without having to sell one of our children into slavery?

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  • Candace Gusmer
    Candace Gusmer Jul 13, 2007

    Oh yeah...one thing neither of us is clear on, how do you discharge the high voltage capicitor so that you can work on the t.v. safely (and preferably discharge it safely so that 911 calls are not necessary)? I'm not treating this lightly, but I tried for over 4 hours last night to get this thing to refocus, short of threatening it with either a swim in the pool or a 17 lb. sledge and have had little or no sleep (and two teenagers that really want to see the new HBO HD channel(s) we just got).

    Any help would be greatly appreciated.

  • Candace Gusmer
    Candace Gusmer Jul 15, 2007

    Ok....we first checked the CRT fluid (clear) as it's easier to pull off the front (but I think we may have put the screen back on backwards.). So, here's another question....there are two layers on the screen, one shiny, and thick(almost opaque) and the other dark almost paper thin, and just a bit smaller. Which side faces out toward the viewer (I wasn't there when my husband took the front off)? Also, is heat sink dope same as zinc oxide?

  • KeyShon97 Mar 18, 2008

    I'm getting a rainbow effect with the color at the bottom of the screen. I've tried to manually adjust the color, but that doesn't work.

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High Voltage Capacitor? Leave the set unplugged for 1/2 hour most components will selfdischarge, as for your problem, being a Magnavox, you have one of two problems, the convergence I suspect is what is blown out, this unit probably uses STK392-110 Ic's, I would suggest replacing with STK394-160e chips as they are probably shorted, some of the big resistors (1 or 2) may be opened up also, usually they change color. The only other thing that would cause usually a yellow color in the corners is the CRT Fluid, it changes from clear to Orange in color and clamps off the blue color from the fringes, I suspect the chips need replacement, dont forget to put some heatsink dope behind them, they are usually on the left in the front of the set (from the back) Big long heatsink that is fairly tall (probably the biggest heatsink in the set.) Good luck, and the repair usually runs around $350.

Posted on Jul 14, 2007

  • les lake Aug 03, 2007

    The heatsink Dope I use is a Silicone Heatsink Compound, on sets with 3 plastic screens the plexiglass goes outside (not side dependent), the darker unit with vertical grooves goes in the middle (grooves out) and the one with circular grooves - fresnel - goes inside.

  • les lake Aug 03, 2007

    On sets with two, just leave off the plexiglass part and the vertical grooves are the surface you view. Some newer LCD projection sets invert the vertical lines to the inside.

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1 Answer

My 48 inch Magnavox HD is showing double Model #: 51mp392h/17


2_27_2012_4_36_52_pm.jpg

If it looks anything like the picture (3D etc) it will need the "Convergence circuit" repaired.

Let me know if you have questions.

Feb 26, 2012 | Philips Magnavox 51MP392H Rear Projection...

1 Answer

My tv is a magnavox and we bought it about 3 years ago and it is now showing like a double picture the color is hazy and pinkish looking the model is 51MP392H/17


The problem of your unit is the convergence. Try to adjust it using the original remote control in the setting menu, then goto the convergence section adjust the red and blue convergence, you should move red and blue UP, DOWN and LEFT or RIGHT, if you cannot move them far enough the convergence IC is defective, replacing this IC will restore the original setting of your tv. This convergence IC is attach to a large aluminum plate it is the heat sink this IC has a marking of STK-#### followed by numbers, remember be careful when replacing this IC you may accidentally tampered or damage the PCB and cause much damage to your unit. Or you can contact a technician to do it for you and save you from stress good day and best regards. Try to check this link for the convergence http://www.google.com.ph/search?q=convergence+ic&hl=tl&sa=X&tbm=isch&prmd=ivns&bav=on.2,or.r_gc.r_pw.&biw=798&bih=472&ech=1&psi=JZdtTvDCPIe4iAe72sTABA.1315804977740.3&emsg=NCSR&noj=1&ei=MpdtTpa4OKKSiQfBpcjGBA

Sep 12, 2011 | Philips Magnavox 51MP392H Rear Projection...

1 Answer

I have a Magnavox 51mp392h/17,that now has double vision (text is double,all images) there is also green, off red colors on the picture. Please help me the tv is 6 years old. should i throw it away or get...


No.Should cost u like $300-350 for parts and labors.Get it fixed any local tv shops can fixed this problems,very common problems for DLP CRTS tubs design projection tvs Tv have a problems known as a convergence problems,it is dead.The tv convergence board it is dead,that why ur tv picture colors lines R,G,B mis alignments,have pictures colors shadow or 3D pictures look alike.The tv convergence board must have it parts replace like 2 STK convergence ICS and some or all of it resistors to fixed the convergence board to solved convergence pictures problems.

Jul 22, 2011 | Philips Magnavox 51MP392H Rear Projection...

1 Answer

My rear projection tv 51MP392H/17 has a blurred red shadow that makes it look kind of like watching a 3d movie without the glasses. for a while we could turn it off and back on and it would reset the...


Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired. It still can be repaired.
Using your original remote go-to the settings menu then goto the convergence section. Try to adjust the red and then the blue convergence. You should be able to move RED and BLUE in all directions - up, down, left, and right. And you should be able to get the grid straight. If you can't move them in all directions or cant move them far enough your convergence chips are bad and should be replaced. This is a common problem. Note: If you TV has as flash focus or magic focus button only try pressing the button. If it fails to fix the convergence your need to fix it. See below for a fix Reply

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses. If you have never done this before we would advise calling a technician or if you want to do it yourself get a complete kit with instructions and support from TvRepairKits.com Their kits include a step by step instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, email/phone support, etc.Thanks! hope you rate my response

Feb 02, 2011 | Philips Magnavox 51MP392H Rear Projection...

1 Answer

Convergence wont align on Magnavox 51MP392H/17


You will need the original remote to perform a convergence touch up on Magnavox TV sets. If you are using the original remote - but still can't get it working - go back to the site where you purchased the tv repair kit and ask for their help

Feb 06, 2010 | Philips Magnavox 51MP392H Rear Projection...

1 Answer

Magnavox 51MP392H/17 picture is washed out


no the best thing to do is call a repairman to fix the set so you arent 2nd guessing the parts you may or may not need

Jan 13, 2009 | Philips Magnavox 51MP392H Rear Projection...

2 Answers

Magnavox 51MP392H -- Multipoint Converge blue faded around edges


hey guys here is a great thread on this subject, its were I posted most of my pictures and there is a link to the manual in there. hope this helps,

BTW, IF ANY OF YOU GIVE UP ON YOUR 51MP392H/17 PLEASE LET ME KNOW!!!! I WANT TO BUY YOUR CONVERGENCE BOARD... "I killed mine" edwinkraus@hotmail.com

http://www.techlore.com/forum/thread/16736/Magnavox-51MP392H-17-51-quot--TV-has-double-vision/?page=1

Sep 29, 2008 | Philips Magnavox 51MP392H Rear Projection...

1 Answer

Picture problems


The convergence amps have most likely failed. This is the number one leading cause for the symptom your describing and the most common failure on that unit.
Your Tv take two STK392-120 Sanyo Ics for convergence amps, located at Ic7404 and Ic7405 on the board and mounted to a rather large aluminum heat sink. In addition you will most likely have to replace R3159 and R3160 (6.8 ohm 1w) resistors and test the remaining low ohm resistors for change in value.
A shop would really be earning their money on this particular unit if they charged $400 - $500 for the repair. It is an extremely difficult set to work on and there are a number of little problems that can reach-out and bite when attempting the repair.
Good luck!
Bill

Dec 02, 2007 | Philips Magnavox 51MP392H Rear Projection...

1 Answer

Philips Magnavox 51MP392H Rear Projection TV


A sign that amps are going bad, right now you can check resistors in convergence board alongside the amps, check resistance to see if right.

Oct 08, 2007 | Philips Magnavox 51MP392H Rear Projection...

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