20 Most Recent Philips Magnavox 51MP392H Rear Projection Television - Page 5 Questions & Answers

If this is an older rear projection TV as the model number indicates, you can unplug and remove back cover.Inside you will see three large round black lens---these are for the 3 picture tubes: Clean all the dust and dirt off of them with either a lens cloth or a paper towel with glass cleaner sprayed on the towel.The lens are the light source for your picture and if dusty the picture will gradually become darker and some what blurry looking.hope this helps you.sj

I have a simple suggestion which will tell you exactly why the picture looks yellow.It requires no parts or special tools but I need to know if you can follow simple instructions?This is not an uncommon problem and if you require further help I can explain exactly what to do and what to look for.SD TECH

Did you check for open resistors around the chips?

HelloSix Long and One Short represents the digit [61] of the fault diagnosis. You have to look for it at its service manaul for details. OK.

Hi,

You can download the instruction manual in PDF format by clicking this link:

http://download.p4c.philips.com/files/5/51pp9303h_17/51pp9303h_17_dfu_aen.pdf

Adobe PDF Reader is required to view this manual. Download Adobe Reader

Kindly let me know if you have any difficulty in downloading the manual.


Thanks!

WELL IF YOU HAVE ALLOT OF TIME ON YOUR HANDS,I'M GETTING READY TO RESOLDER THE MAIN BOARD, EITHER IT WILL WORK AND SAVE YOU MONEY OR TAKE IT TO THE SHOP.CHECK TO SEE IF THE WARRENTY IS UP....LOL THE TV'S TODAY ARE NOT THAT BAD $$$$$ I THINK THAT ALL DO.

if its a philips or magnavox the protection resistors should be 1.8 ohm and 1/2 watt. They are in pairs and if white in the middle and open it means both convergence chips also need to be replaced.Let me know if you need help or advice.SD TECH

May I know what is the labelled of these resistors on the board?

The Lenticular screen is available through Encompassparts.com at a cost of $167.96, they only have two left.

R3231 is a 220 ohm 5% 2 1/2 Watt metal film resistor

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

Thats a common problem caused by failed convergence Ics and resistors. The Phillips DPTV305 - DPTV345 convergence repair kit from www.tvrepairworld.com is the correct repair kit for your model. It contains the two ICs and the 12 resistors plus the cd with repair instructions.

Check for blown fuse, if so then check for a shorted horitzontal trainsistor located on a metal heat sink near the flyback transformer on the high voltage module. If those are ok, then you have a bad convergence board.

Its more likely that the CRT coolant needs replacement. Thats vert famous for that model. The CRT coolant gets messed up and the CRTs cant project the image properly so it gets a dull picture and the color tints are wrong.

I have same problem with mine, the power button turns red (as usual) but no picture. When i turned mine on last night it made a crackle noise and thats how it all started. I can even hear the normal sounds it makes as if it were turning on, but still no picture. Its a great tv I would hate to throw away. I want to fix it myself any help would be appreciated!

Your convergence has failed and needs to be repaired. Once quick test is to goto your convergence menu and see if you can adjust red and blue. If not its has failed and needs to be fixed. You can call in a repair shop or you can get the parts and instructions from www.TvRepairKits.com and do the repair yourself. Its a fairly easy DIY fix.
Here is an example photo....

It sounds like you convergence has gone out which is common. You can get parts and instructions to repair this yourself from www.TvRepairKits.com

When you remove the rear cover you will see the large green board on the left side. Note the two large aluminum heatsinks with the fins? The 2 Convergence Ics STK392-120 are attached to that heat sink the 12 6.8 ohm resistors are at board location 3149-3160 they are all the 6.8 ohm 1watt metal film resistor located near the Heat sink which has the two ICs.

The flyback is likely bad...and hard to get for this model

If the screen is a bright red its indicating an issue with the CRTs could be the red has shorted or the coolant in the blue and green is needing replacement which makes the red Dominate. Looking into the blue and green lenses will verify if its a coolant isssue or not. The convergence issue is most likley failed convergence ICs and the associated 6.8 ohm resistors need replacment.