magnavox 37mf337b/37 parts advice

[zombslayer]

Re: magnavox 37mf337b/37 parts advice

Parts are on the way! Checked D912 out of PSU it came back faulty. I will be using UF4007 diode for that replacement.P6KE120ACT ZD will be used for ZD902 ,and the three caps will be replaced with Panasonic EEU-FR1V102. Killian6pk, great point! Its alot easier to look at a pic than have to remember everything. I will update with progress as soon as parts are installed. Thanks again! Much appreciated!

[selldoor]

Re: magnavox 37mf337b/37 parts advice

Its alot easier to look at a pic than have to remember everything.

It is one of the reasons I press people to supply good clear pictures - they also
help with future queries when parts are burnt out.

[RICHARDRAY]

Re: magnavox 37mf337b/37 parts advice

ANYBODY OUT THERE CAN HELP ME WITH A PROBLEM WITH MY MAGNAVOX 37MF337B.. THE MAIN BOARD IS BAD OR SO I HAVE BEEN TOLD (PROIR TO THAT IT WAS A POWER SUPPLY WHICH AFTER I REPLACED IT THE REPAIR SHOP SAID IT IS NOW THE MAIN BOARD) I WAS LOOKING FOR ONE ON EBAY AND LOCATED A BOARD THAT THE GUY CALLED A T-CON BOARD PART # 6870C-0088D VER.1.. IT THIS THE BOARD i NEED ? BETTER YET, IF YOU CAN SEND ME TO A WEBSITE THAT WILL SHOW A SCHEMATIC, DIAGRAM OR LIST OF PARTS FOR MY TV SO I CAN "SEE" WHAT I AM LOOKING FOR.. I SEEN THIS BOARD BEFORE WHEN I BOUGHT MY POWER SUPPLY BUT CAN'T FIND IT NOW NOR KNOW THE LANGUAGE SO ANY HELP WOULDBE WELCOME.

[tom66]

Re: magnavox 37mf337b/37 parts advice

PLEASE DO NOT TALK IN CAPITAL LETTERS. IT MAKES IT SEEM LIKE YOU ARE SHOUTING.

It sounds like the repair shop doesn't know what the fault is, I wouldn't trust them. They sound like they just swap boards rather than try to diagnose the problem.

Here, I just uploaded the service manual:
http://www.tgohome.com/ServiceManual...&Search=Submit

[ryan74]

Re: magnavox 37mf337b/37 parts advice

I need help identifying, or finding a replacement zener diode.
I cant find a free datasheet for crossreference, and I dont know enough to figure it out myself.
Location(zd906) and part number(LT7228 P4KE250A)

[budm]

Re: magnavox 37mf337b/37 parts advice

@ryan, that must be one those common failure diode in the snubber circuit, do not try to run without having new one installed.
http://www.mouser.com/Search/Product...p%252btw%3D%3D

[ryan74]

Re: magnavox 37mf337b/37 parts advice

Oops. I replaced the blown caps and powered on for 10 sec..
Front led flashed fast and continuous red.

I must have missed checking it first time through.
Thank you for the link.

Just curious- what usually happens when you run it.

[Welchs101]

Re: magnavox 37mf337b/37 parts advice

hi, i have a very similar power supply board from a TV model number
(47MF437B/37 Phillips / Magnavox). The board is very similar. I have the same exact diode that is failing....P4KE250A.

also looking for a replacement diode for this?