Re: vp2130b cap help
Okay, its now some three weeks since I replaced the red ringed caps on the logic board of my VP2130b display. It's running fine so have decided to replace the back cover. I guess this will tend to raise the temperature of the three boards by a few degrees. I'll see how it performs over the next month.
Once again, thanks to all at Badcaps for help in understanding and fixing the problem.
Splinter...
Splinter
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Re: vp2130b cap help
lucky13, I got the caps and have replaced the ones you circled in red. I now have the display running without the rear cover in place so that it won't have to be removed if I have to replace the purple circled ones as well. So far, after a week of use, the "off/on" problem has not reoccurred, so it's looking hopeful that the new caps have fixed the problem. Thanks for your timely advice!
Splinter...Leave a comment:
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Re: vp2130b cap help
lucky13, thanks for your advice. I'll order the caps you have highlighted with those for the power board.
splinter...Leave a comment:
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Re: vp2130b cap help
Thanks el3ctroded, I meant ripple current and that's just the answer I was looking for. If I'm understanding you correctly, for any given uF/V spec, as the ripple current rating goes up, so typically does the caps physical size.
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Re: vp2130b cap help
Al,
Thanks for your advice. The difficultly with the VP2130b boards is accessing them when the display is running due to the way in which the unit is constructed. However, I'll certainly give it a try.
I'm just about to order the replacement caps for the power board. I have identified caps that match both capacitance and voltage but its been difficult to pin down the ripple level for the originals so have had to go for a simple size for size match.
Is there any rule of thumb for caps used in this sort...Leave a comment:
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Re: vp2130b cap help
Al,
Thanks for your advice. The difficultly with the VP2130b boards is accessing them when the display is running due to the way in which the unit is constructed. However, I'll certainly give it a try.
I'm just about to order the replacement caps for the power board. I have identified caps that match both capacitance and voltage but its been difficult to pin down the ripple level for the originals so have had to go for a simple size for size match.
Is there any rule of thumb for caps used in this sort...Leave a comment:
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Re: vp2130b cap help
Here are the links for the service manuals for VP2130b and VP2030b though I believe that these products use near identical hardware.
[URL=http://ftpkuban.com/FTP/Manual/ViewSonic/VP2130b_SM_1a.pdf]VP2130b Service Manual[/URL]
[URL=http://ftpkuban.com/FTP/Manual/ViewSonic/VP2030b-1_SM_1a%20.pdf]VP2030b Service Manual[/URL]
I have attached plan view pics of the logic, power and inverter boards as you requested.
Regarding your suggestions. I'll can try reassembling the display and running...Leave a comment:
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Re: vp2130b cap help
Okay, the VP2130b service manual pdf didn't stick. I guess at slightly over 5Mb it's a bit on the large size.
SplinterLeave a comment:
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Re: vp2130b cap help
I'll take a plan view pics of all boards tomorrow. Meantime, I have managed to find and attach a pdf of the VP2130b service manual. Might help with any future trouble shooting!
Splinter...Last edited by Splinter; 07-01-2010, 02:02 PM.Leave a comment:
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Re: vp2130b cap help
Thanks PlainBill. I've attached detailed pics of the inverter board and power board on this post. I can get to the main board later if required.
[U]Inverter Board[/U] INV20-6009
There are only 3 caps on this board - these were CapXon 180uF 35V 105ºC - and when the "on/off" problem first manifested itself I found these were well blown, so I replace them with Panasonic 180uF 35V 105ºC caps part number EEUFC1V181 (pic Invboard_1). However, this did not cure, or change, the problem.
[U]Power Board[/U] EADP64BF...Leave a comment:
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Re: vp2130b cap help
What a great thread! Having just resurrected a VX924 by replacing a bunch of caps, I decided that I would have a crack at fixing one of my VP2130b displays that I use on my CAD systems - I'm a mechanical engineer by training so forgive my basic electrical knowledge.
Reading through the thread I don't see the symptoms that are effecting my VP2130b. It starts up okay but as the internal temperature starts to rise the display turns off and then back on with the "on" periods gradually getting shorter as time goes on and temperature rises....Leave a comment:
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