Magnavox 32md359b/f7 White Screen and with sound only

[YEROC37]

Re: Magnavox 32md359b/f7 White Screen and with sound only

checking with other meter.....give me couple minutes

[tom66]

Re: Magnavox 32md359b/f7 White Screen and with sound only

Waaayda minute. I assumed that you had no backlight, in other words you had no light from the screen? I just saw a post saying you had a white screen. Maybe I'm completely mixed up, are you getting light from the screen and is it continuous? I may have mixed up the threads a little. Do not cross the streams! as they say.

[YEROC37]

Re: Magnavox 32md359b/f7 White Screen and with sound only

Lol..I only made this one stream that I know of, but yes my topic is white screen lit up with sound but no picture...

[tom66]

Re: Magnavox 32md359b/f7 White Screen and with sound only

Oh dear. I am not having a good day today, apart from finding the 50" Panasonic. But, I completely mis-diagnosed the fault. Your fault is likely with the green signal board, not either of the PSUs. But did you find out if your other meters were OK?

[YEROC37]

Re: Magnavox 32md359b/f7 White Screen and with sound only

Backlight is on

[YEROC37]

Re: Magnavox 32md359b/f7 White Screen and with sound only

Meter is A-ok..

[tom66]

Re: Magnavox 32md359b/f7 White Screen and with sound only



Still very confused about your meter. Give me a moment.

[tom66]

Re: Magnavox 32md359b/f7 White Screen and with sound only

Can you post a picture of your small signal board. It'll be the one with HDMI on it, usually green in colour.

[YEROC37]

Re: Magnavox 32md359b/f7 White Screen and with sound only

Pictures of HDMI board

[tom66]

Re: Magnavox 32md359b/f7 White Screen and with sound only

Is there an obvious way to remove that metal shield without damaging the signal board?

[YEROC37]

Re: Magnavox 32md359b/f7 White Screen and with sound only

Yes moving now

[YEROC37]

Re: Magnavox 32md359b/f7 White Screen and with sound only

Here ya go tom

[YEROC37]

Re: Magnavox 32md359b/f7 White Screen and with sound only

so this board could eliminate the picture from showing?

[tom66]

Re: Magnavox 32md359b/f7 White Screen and with sound only

I'm sorry those pictures are really too blurry for me to highlight much. Is there any way to make them a little better? Perhaps using sunlight would work. I'm trying to see tiny things like SMD fuses and marked test points.

The white or black screen, with lit backlights, is a common issue with all TVs. Generally that board would attach to a separate t-con board and the t-con board commonly fails. Looks like they have integrated the two on this chassis making it a little harder to diagnose but it's either there, or in the power supply feeding that... the inverter is fine, I was totally heading down the wrong direction, I'm still suspicious of your meter though.

[YEROC37]

Re: Magnavox 32md359b/f7 White Screen and with sound only

I heard somethings about using a heat gun or adding heat to certain system boards because solder or sometimes just getting joints to resit, I've done this trick on game systems that overheat...Am I way off

[tom66]

Re: Magnavox 32md359b/f7 White Screen and with sound only

It could be a good test. We have seen several TVs here with similar issues to the Xbox 360 and PS3 regarding main chip BGA solder joints, mostly Samsung TVs though. And I don't like Samsung TVs for a good reason...

[YEROC37]

Re: Magnavox 32md359b/f7 White Screen and with sound only

Yes, my brother had a samsung and TV guy came with heat gun and it worked

[YEROC37]

Re: Magnavox 32md359b/f7 White Screen and with sound only

sending clearer pictures now

[YEROC37]

Re: Magnavox 32md359b/f7 White Screen and with sound only

We have no sunlight here, you must be on west coast, let me know if this is ok

[tom66]

Re: Magnavox 32md359b/f7 White Screen and with sound only

Much better. Thank you. Is there any way to get them a little bigger? Aside from that, they are great. The size of the 4th pic is a good size.