Magnavox 46ME313V/F7 powers on and off

[budm]

Re: Magnavox 46ME313V/F7 powers on and off

OK, that does not make sense, the 56 ohms resistor is fed to pin 3 of the IR BUT YOU READ 268 Ohms.
To get 56 Ohms to gorund between the pin 1 of the connector and ground, it must have faulty part some where, the on one I can see will be C4054. Check the resistance of that cap and remove it if it still shows < 100 Ohms.

[cory1108]

Re: Magnavox 46ME313V/F7 powers on and off

4051 and 4056 showing between 6.5 and 7 ohms but from the best of my testing the ir sensor does appear to be shorted

[cory1108]

Re: Magnavox 46ME313V/F7 powers on and off

C 4054 is 62 ohms

[cory1108]

Re: Magnavox 46ME313V/F7 powers on and off

Thank you for taking the time to help me with this! I do not have any replacement parts but it seems we have it pretty well narrowed down to the ir board so I'm just going to replace entire board.... $10 on SJ so not bad at all.

[budm]

Re: Magnavox 46ME313V/F7 powers on and off

OK, for $10 it will be cheaper than buying all the tools to fix the board, just make sure to give us the follow-up on the repair.

[HiDesertRat]

Re: Magnavox 46ME313V/F7 powers on and off

With my IR board out. Measuring resistance black lead on pin 7; every pin, 1,2,3,4,5,6,8 and 9 all read an open (using 2000 ohm setting)

I did swap the leads just to see if it would make a difference:

pin 1 = 372
pin 2, 3, 4 = open
pin 5 = 1725
pin 6 = 840
pin 8 = 706
pin 9 = 706

Only did this to prove you have to have the black lead on ground when making the resistance readings. I am sure there is a diode in there somewhere that gets forward biased with leads reversed.

Still didn't get the reading Cory did.

[HiDesertRat]

Re: Magnavox 46ME313V/F7 powers on and off

Well, Cory.....how did the IR board replacement work out for you? I'm interested in knowing how things went......

[Dbmwhite]

Re: Magnavox 46ME313V/F7 powers on and off

hello guys I am new here. I have a Magnavox 46me313v/f7 it quit working one day. I found online some info and some stuff to check. need less to say I got a IR sensor and I installed it. the tv turn on and work just fine but then when I turn the tv off it will not turn back on. I then took the ack off the tv and I found when I unplug the ir sensor and plug the old one back the tv will come back on but when the tv is turn off it will not turn back till you unplug the ir sensor.please help

[heavymachines]

Re: Magnavox 46ME313V/F7 powers on and off

OK guys an update to this thread since the OP never came back . I removed C4056 and C4051 on IR board and tv will turn on by power switch and work fine and dandy. The ir is definitely shorted so i will be replacing it and should solve this TV problem.





Well after playing around the darn remote still works with tv even with those caps removed!!!!!! every function appears to work like normal i do not understand it but i will take it. Everything works.

[heavymachines]

Re: Magnavox 46ME313V/F7 powers on and off

Another update replaced those SMD ceramics on ir board and all still is well the tv works fine with or without them as long as you remove the shorted cap with 6.5 ohms of resistance...

[dskall]

Re: Magnavox 46ME313V/F7 powers on and off

So was ir sensor or caps?

[heavymachines]

Re: Magnavox 46ME313V/F7 powers on and off

SMD Ceramic cap with 6.5 ohms of resistance was the culprit... Replace or remove and tv works fine either way...