Sanyo DP50741 No Vs or Va voltages on panel sticker or in SM.

[lookimback]

I wanted to do a quick adjustment on this before selling it, but I can't find what the voltages should be. I saw potentiometers for Vsus and Vda while I had it open. Didn't see any test points though. There is no panel sticker like Samsung panels have.

[lookimback]

Re: Sanyo DP50741 No Vs or Va voltages on panel sticker or in SM.

Well, I kind of guessed and got it working pretty good. The Va (Vda) was 50.88v, I adjusted it to 51. I searched for a couple hours and found a couple threads where Vs(Vsus) measurements were taken in TVs of this model. 186v seems to be what it is supposed to be. It was 188.9, so it was too high, by almost 3 volts. Picture is way better. I still have 'sparklies' on an all black screen though.

[tom66]

Re: Sanyo DP50741 No Vs or Va voltages on panel sticker or in SM.

Every plasma panel is different, so you can't use someone else's panel figures.

Since it is a Panasonic panel I really doubt you have maldischarge (I've never seen a Panasonic maldischarge) but instead have a rather more common issue: high brightness.

If the brightness control is set too high, it will cause little green dots, then red and blue dots to appear. This is dithering, it is attempting to generate very low level brightness by flickering pixels rapidly. Not a fault! Simply turn the user menu brightness down until the dots disappear. (Ideally you'd use a 16-235 cal chart to get it perfect.)

[tw2005]

Re: Sanyo DP50741 No Vs or Va voltages on panel sticker or in SM.

It's a panasonic panel.
panasonic panels stopped having that info from 2010 on. P50C2 would be also one to get a guide for voltages. At 188.9 i would have expected 190V was what it may have been set to so i had a bit of a search and one member has posted 190V for the pansonic 50C2.

On the 42" version panasonic model I have

Vs = 191.5V
Vad = -190V
Ve = 125V
Vda = 55V

As far as panasonic panels go, I've never had to adjust after a repair.

[lookimback]

Re: Sanyo DP50741 No Vs or Va voltages on panel sticker or in SM.

The highest the Va would go was 52.45. I'm watching a movie on it now, it looks pretty good.

[tw2005]

Re: Sanyo DP50741 No Vs or Va voltages on panel sticker or in SM.

The highest the Va would go was 52.45. I'm watching a movie on it now, it looks pretty good.

I'm not sure but the panel voltage at the c buffers i think you need to be careful.
I think the point i was trying to make was unless they've been tampered with probably could have been left but i'd expect a good image with that panel.

pretty hard to compare one panel to another and the 42" figures, I just put them there for some idea.

[lookimback]

Re: Sanyo DP50741 No Vs or Va voltages on panel sticker or in SM.

I didn't mean I left it at 52.45, I'd just adjusted it to the nearest volt, which was 51. I missed Toms post above. The little green dots describes it perfectly. I checked the brightness, it's at 32. That's the default setting. But more importantly, I noticed that the black parts of the menu don't have the green dots. So I wonder if it's my HDMI cable, or computer, which is causing it?

[tw2005]

Re: Sanyo DP50741 No Vs or Va voltages on panel sticker or in SM.

I didn't mean I left it at 52.45, I'd just adjusted it to the nearest volt, which was 51. I missed Toms post above. The little green dots describes it perfectly. I checked the brightness, it's at 32. That's the default setting. But more importantly, I noticed that the black parts of the menu don't have the green dots. So I wonder if it's my HDMI cable, or computer, which is causing it?

Or maybe you're reading to much into it. post an image but I know they started to dial out the power consumption in 2010 models. I would have to have a look a my 42 pana but my FHD has that if you have your nose up to it and noticeably dimmer to 2009 model. If it looks perfect at the normal viewing distance then sounds fine.

[lookimback]

Re: Sanyo DP50741 No Vs or Va voltages on panel sticker or in SM.

It does look good from viewing distance. I have to get close to see the dots.

[tw2005]

Re: Sanyo DP50741 No Vs or Va voltages on panel sticker or in SM.

It does look good from viewing distance. I have to get close to see the dots.

Sounds like a winner

[lookimback]

Re: Sanyo DP50741 No Vs or Va voltages on panel sticker or in SM.

I was probably reading too much into it. Thanks.

[lookimback]

Re: Sanyo DP50741 No Vs or Va voltages on panel sticker or in SM.

If this was a little bigger, I think I'd keep it for myself. Honestly, I think plasmas have better pictures. I have a 47" LG LCD which I fixed about a year ago. It's time for an upgrade. I want something 52" or better though. Preferably 55".

[tom66]

Re: Sanyo DP50741 No Vs or Va voltages on panel sticker or in SM.

I didn't mean I left it at 52.45, I'd just adjusted it to the nearest volt, which was 51. I missed Toms post above. The little green dots describes it perfectly. I checked the brightness, it's at 32. That's the default setting. But more importantly, I noticed that the black parts of the menu don't have the green dots. So I wonder if it's my HDMI cable, or computer, which is causing it?

Yes, this can also be caused by the colourspace being set incorrectly on your graphics cards settings. For a some HDMI TVs it needs to be on RGB instead of YPbPr. Being on YPbPr will cause the black level to be elevated as it shrinks the colourspace from 0-255 to 16-235, all black has min 16 intensity

If this was a little bigger, I think I'd keep it for myself. Honestly, I think plasmas have better pictures. I have a 47" LG LCD which I fixed about a year ago. It's time for an upgrade. I want something 52" or better though. Preferably 55".

You 'mericans and your big TVs. I don't get it, 50" is too big for my living room!

[lookimback]

Re: Sanyo DP50741 No Vs or Va voltages on panel sticker or in SM.

The alternative is getting new glasses. I can get a bigger TV for less.