Magnavox 32md359b/f7 White Screen and with sound only

[tom66]

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

I'm in a little place called the UK, I think we had a disagreement sometime around 1776 about independence or something.

[YEROC37]

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

I was just working on that, just noticed only one is sizing

[YEROC37]

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

testing this one

[YEROC37]

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

Wow much better I think

[tom66]

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

Looks good. I am heading off to bed soon. I will have a look at this in the morning when I get a chance.

[YEROC37]

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

tom I believe these shall work sir

[tom66]

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

OK couldn't resist - got to sleep soon though! Which end of the the board plugs into the LCD panel (it will go up into the metal frame, possibly onto another board) and which end into the yellow/orange boards?

[YEROC37]

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

the last pic shows the flat flex, that is it

[tom66]

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

All three go to the LCD?

[YEROC37]

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

CN3902, it sits at base/bottom

[YEROC37]

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

No, it's the single flex in the pic...its on the right hand side

[tom66]

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

Odd arrangment; the other two go to the yellow boards? I'm trying to figure that out, have the bent the cables over for one set?

[YEROC37]

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

No the three go to the power supply board and the flex flat cable that is off to right side by itself goes to the LCD

[tom66]

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

Oh OK. That cable is just smaller than I expected for the kind of data but this TV is designed in a unique way.

[YEROC37]

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

There are two flex cables going to that LCD ...One from Inverter board and the one which is shown on the system board in the pic above

[tom66]

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

Is the board on the LCD just a long thin strip? I am hoping it might have a fuse, but I don't think it will.

[YEROC37]

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

Yes it is

[YEROC37]

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

I see no sign of a fuse on board,

[tom66]

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

Hmm, you are getting sound, so most of that SupraHD chip is working. I think the only possibility is something on the LCD isn't working right. But they included no fuses... There are some drive voltages, -6.8V, +16V and +22V. These are available on CN1001, which goes to the inverter.

-6.8V is at C202 - a little beige/brown disc probably.
+16V is at C201 - similar
VGH is pin 10 (22V) or possibly Q201 (one pin should measure 22V, the other, 24.4V, and the other 23.9V according to schematic.)

Please verify these are good and present.

[YEROC37]

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

Thanks tom, I am on it now checking