Re: Samsung PN50B430P2DXZA
Y-main scope reading
Y-main scope reading
Attached Files
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Re: Samsung PN50B430P2DXZA
Where do I connect scope probe on X-mainAttached FilesComment
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Re: Samsung PN50B430P2DXZA
Also is 5V standby power supposed to be there with tv on and tv in standby mode.Comment
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Re: Samsung PN50B430P2DXZA
Nice scope! Y'know, it has a USB port, for exporting an image, it's a lot easier.
Y-main looks OK.
X-main waveform, see picture.
Yes, 5V standby should always be present.Attached FilesPlease do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Samsung PN50B430P2DXZA
Nice scope, operator sucks.
See the X-main scope picture.Attached FilesComment
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Re: Samsung PN50B430P2DXZA
Here is the one that matters fromX-mainAttached FilesComment
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Re: Samsung PN50B430P2DXZA
That's more or less correct for X-main waveform. Can you try turning off the dual-timebase zoom (zoom factor should be off) and use a timebase of 10us/div?Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Samsung PN50B430P2DXZA
Here you go X-mainAttached FilesComment
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Re: Samsung PN50B430P2DXZA
Y-main with new settings looks suspiciousAttached FilesComment
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Re: Samsung PN50B430P2DXZA
I can't find fault with either of those waveforms.
Does Ve of 88V match the rating printed on the panel? What happens when you increase it? I have to say, 88V is quite low, a modern panel is closer to 130~150V, though it is one of the most variable voltages for a plasma.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Samsung PN50B430P2DXZA
Did you see the picture of new Y-main waferorm I send. 88V matches panel sticker, maximum increase is close to 120V no difference in picture qualityComment
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Re: Samsung PN50B430P2DXZA
88V is the correct spec for this panel, its also the same spec for the PN50B450 model I worked on.
This is starting to look like the same problem I was going through, all the voltages are on the correct spec too.Last edited by Glitcher; 05-02-2014, 04:38 PM.Comment
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Re: Samsung PN50B430P2DXZA
The Y-main reading looks OK. I'm at a loss to explain the poor image - everything is working right. Any change in image noticed when you adjust the Yrr or Yfr on the Y-main? You should also see a change in the Y-main waveform.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Samsung PN50B430P2DXZA
No changeComment
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Re: Samsung PN50B430P2DXZA
Only suggestion I've got left is a bad control board.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Samsung PN50B430P2DXZA
I thought same but the replacement I got have same problem. It still can be bad replacement from eBayComment
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Re: Samsung PN50B430P2DXZA
I never thought of it before, but how sure are you the X-main is connected properly to the panel? Are all ribbons installed? Is the connector well seated, no cracked solder joints etc,?Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Samsung PN50B430P2DXZA
I will compare x- main I ordered and the replacement. Maybe the one I repaired damaged control board I ordered as replacement. What bugs me is there are 4 RJH3044 gets and 2 Fairchild fets and Fairchild fets are supposed to be replacement for RJH3044. I installed Fairchild so ended up with 6 same Fairchild parts. If they are replacement why would every x and y main had both of them? I guess something is different.Comment
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Re: Samsung PN50B430P2DXZA
X main is connected properly. I removed few times and reconnected. I don't see nothing wrong with cable or connection. There is a way to check main and logic board pattern in service mode also. I just need to get remote for SamsungComment
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