Re: ViewSonic VX2235wm LCD Monitor
I agree with Bobdee on posting under troubleshooting area. However, I will say that not all bad caps have obvious bulges or leaks. There may be a slight bulge that some people may not even notice. However, every failing device I've recapped DID have some obviously bulging caps. Good luck.
Birdyman
Member
Last Activity: 01-29-2011, 09:08 AM
Joined: 01-11-2007
Location: The Land of Elvis
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Re: HP L1906 LCD Monitor
It's been a while since I did this, but I can tell you what I remember.
1) Bezel/trim ring just pops off the best I remember. You have to pry it starting in corners and working your way around ... and be gentle.
2) The rest of the parts come apart using a small Philips screwdriver and a small star/torx driver if I remember right. You may have to remove a label/sticker to access a screw or two.
3) Remove the base/stand using the clipping devices. Then remove the tilting mechanism by pulling the plastic cover off, then unscrewing...Leave a comment:
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Re: ViewSonic VX2235wm LCD Monitor
Woohoo! Repair went great ... took all of 1 hour (see pic). Monitor is working great now. Nice bright picture, and running in digital mode without any static lines. Hard to believe you don't see these capacitor problems on one of those CNBC or CNN specials. I wonder how much unnecessary landfill space has been taken up with electronics that only had bad caps. Amazing huh?...Leave a comment:
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Re: ViewSonic VX2235wm LCD Monitor
OK, got my parts in from Digikey. Fast processing and shipping, as usual. Here are the board pics. Notice the black CapXcons are bulging. There were two that were in really bad shape with the bottoms literally coming out of the canister....Last edited by Birdyman; 09-04-2009, 07:15 AM.Leave a comment:
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Re: ViewSonic VX2235wm LCD Monitor
Oh, and one more problem I saw was that when you switch the monitor to digital, you get static lines across the screen. Analog worked fine. I bought this monitor for really cheap off Craigslist, so I could live with it.Leave a comment:
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ViewSonic VX2235wm LCD Monitor
Well, you won't believe it, but just 2 months after my HP L1906 LCD got caps replaced, my ViewSonic VX2235wm just instantly went very dim. Fresh from the HP repair, I decided to disassemble the ViewSonic, and guess what I found? You got it, bulging CapXcon's. Thankfully, there are only 9 caps on the power board, and of those only 7 were CapXcon. I will replace all but the monster 480uF. It appears OK as do the TAICON's. Will post pics when I get my parts from Digikey and do repair.
MAN I love this site!
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HP L1906 LCD Monitor
Have an HP L1906 LCD that failed to power on after lightning storm. Opened up and found a number of bulging caps on power board. All were CapXcon. I ordered various size Panasonics and U-Chemcon to replace. Repair went beautifully and all is working well now. Guess lightning storm was just enough to put the caps over the edge. Sorry I didn't take pics, but caps looked pretty much like any bulging CapXcon gone bad. Hope this helps someone.
Birdyman -
Re: Gigabyte GA-7VAXP Recap
Yes, you have to love BADCAPS.NET because they're making one helluva HW argument. Not just talking about it, but arming the average person with what they need to actually get up and get the job done. Great stuff IMHO - almost like a grass roots kinda thing for the computer industry.
You know, board mods really aren't much more effort than major SW mods ... just takes a few tools (hey ... maybe that's it ... nobody owns tools anymore), and a little knowledge of hardware (that society has decided to quit teaching). I remember being...Leave a comment:
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Re: Gigabyte GA-7VAXP Recap
Yeh, I have a pretty good idea of how many. I spent several years with Dell then several more with Arrow Electronics. I was always more of a systems engineer than a board level guru ... but I have done it all at one point or another. I can't tell you how many times I've had to give a "sales pitch" to a colleague, customer, or exec trying to convince them that the hardware was at fault - ESD damage, board revision change, poor quality - you name it , I've seen it. Hardware is a hard argument to make, simply because you can't connect...Leave a comment:
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Gigabyte GA-7VKMLS Recap
Well, I decided to do the kids Gigabyte GA-7VKMLS board tonight. The "before" state wasn't really much to talk about as there weren't any real problems with the machine. All the caps looked in good shape. Had Sanyo WG series
for the 3300uF and 1200 uF, and Supacon 
for the 1000uF. Decided that I might as well do it now rather than chance getting into the mess I got into with my GA-7VAXP (see my other post).
So why recap a working machine? Well, the kids had a problem with some random reboots a few months back, but they seemed to go away after I [by chance] removed... -
Re: Gigabyte GA-7VAXP Recap
Well, the machine has been running continuously for around 72 hours now, and I've been doing A LOT OF WORK on it. So, I think I can post an update of the issue resolution/outcome with a good degree of confidence now.
ISSUES SUMMARY:[list][*][COLOR=Lime][B]RESOLVED![/B][/COLOR] Blue screen with and without automatic shutdown - depends on STOP code. [B]Not one bluescreen or shutdown since recap - normally would have seen 6-10 by now.[/B][*][COLOR=Lime][B]RESOLVED![/B][/COLOR] Problem with Internet Explorer "has encountered an error"...Last edited by Birdyman; 01-22-2007, 11:26 AM.Leave a comment:
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Re: Gigabyte GA-7VAXP Recap
As stated, here are some performance notes on the recapped board. The machine has been running Windows for about 8.5 hours at this point. The values were taken from a hardware monitoring utility that came with board. All peripherals are installed and working, and case is buttoned up.
[B]Voltages:[list][/B][*]Vcore before: 1.532 +/- 3.0% after: 1.500 +/- 0.0% (perfect)[*]DDR Vtt before: 1.260 +/- 1.6% after: 1.240 +/- 0.6%[*]All other before: noticeable fluctation after: none to little fluctuation[/list]
[B]Temperature:[list][/B][*]CPU...Last edited by Birdyman; 01-19-2007, 02:44 PM.Leave a comment:
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Re: Gigabyte GA-7VAXP Recap
Man, Digi-Key and UPS rock. Had order in less than 48 hours using UPS 3-day shipping!
Below are some pics of the board before and after recapping. I started the soldering iron about 8pm. I used a Radio Shack 40w left over from college, although I had to give the tip some love before I could use it. The 3300uF Panasonic caps were 12.5mm whereas the original GSC's were 10mm. I had to do some bending on the leads to get them to fit the space correctly, but it turned out pretty good.
I heated the cap leads with a "wet"...Last edited by Birdyman; 01-19-2007, 01:41 PM.Leave a comment:
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Re: Gigabyte GA-7VAXP Recap
OK, I can't justify doing a reinstall of Windows until I get the hardware fixed. And if I'm going to pull this system apart to replace the caps, I might as well do some other stuff while I'm at it.
Decided on Digi-Key, because it's one stop shopping. Mouser, Newark, and Arrow didn't have all the components I needed in stock. From Digi-Key's capacitor offerings, I chose to use the Panasonic FM series for 3300uF, 1500uF, and 1200uF. The FM series specs are excellent, and they are on the GOOD LIST. For the 1000uF, I chose the Chemi-con KY...Leave a comment:
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Re: Gigabyte GA-7VAXP Recap
OK, here's the condensed troubleshooting list.[list][*]New power supply. Helped the problem with dead power supply, but [B]DID NOT help[/B] the other problems.[*]Reinstall Norton Internet Security (for 3rd time). [B]DID NOT help[/B].[*]Cleaned system thoroughly and reapplied thermal grease to CPU heatsink. [B]DID NOT help[/B].[*]Ran burnin style tests on CPU, MB, RAM, and HDD. All OK. [B]DID NOT help[/B].[*]Inspected MB closely. [B]HELPED![/B] Found all four 3300uF GSC crapacitors were bulging and leaking. No other caps showed sign of damage.[*]Shut down...Last edited by Birdyman; 01-19-2007, 11:09 AM.Leave a comment:
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Re: Gigabyte GA-7VAXP Recap
The following is why I ended up on BADCAPS.NET. This was a perfect system from 2/03 until 6/06. I keep it ultra clean and up-to-date - tested software only - no useless bells and whistles when I can control it.
The system:[list][*]Windows 2000 SP4 w/ all security, program, and drivers up-to-date[*]Norton Internet Security 2005 (which is another topic of its own)[*]Gigabyte GA-7VAXP w/ VIA KT400[*]AMD Athlon XP "Thoroughbred" 1800+[*]256 (x2) MB Kingston PC3300[*]Promise RAID (onboard) w/ 2 WD Caviar 40GB in RAID 1[*]ATI...Last edited by Birdyman; 01-19-2007, 10:27 AM.Leave a comment:
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Gigabyte GA-7VAXP Recap
First ... thank you BADCAPS.NET and all the posters
Second ... I am entering these posts "post-fix", but will try to do it as if I had been posting as I worked through the issues. Hopefully someone can get some use out this thread this way.
Third ... I vow to take this thread to completion. I will not only post the symptoms and problems leading up to recap, but also to post follow-up documenting what the recap solved, and what it didn't solve.
Cheers for now.
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