Re: VARTA battery damage on 386 Motherboard
So, I found my USB microscope so I could try to get a better look at the damage. The damage looks pretty bad, currently I'm not sure how I will go about this, as it looks like I'm going to need a desoldering gun due to a trace that almost under the ISA slot needs to be repaired or lots of bodge wire repair required, which I don't mind too much, as I am only really looking for functionality. Thoughts?...
Thank you to the guys at HEGE supporting Badcaps [ HEGE ] [ HEGE DEX Chart ]
Announcement
Collapse
No announcement yet.
User Profile
Collapse
-
VARTA battery damage on 386 Motherboard
Hi guys, I have this project 386 motherboard and I am trying to save it, but I am having some trouble finding specs and diagrams for this particular model. It's supposed to be a Joindata G386U motherboard. As mentioned in the title, the VARTA battery leaked, and caused some damage, some of the components damaged are SMT resistor and capacitors, could use some advice on replacements or anything else that would be helpful to get this board to working order. I do believe that I will have to repair some traces. Anyways, here are some pictures....
-
Re: Macintosh SE Capacitor replacements?
Thanks for the link and the advice, I've got the battery and holder on order to replace the original, as well as a replacement fan which is whining pretty bad....
Leave a comment:
-
Macintosh SE Capacitor replacements?
I'm currently working on disassembling my Macintosh SE FDHD. I would like to recap it. I've heard it's recommended to recap the analog board and the power supply, is it also recommended to recap the logic board? Also, does anyone have a capacitor list and maybe recommended replacements? I'm not familiar with what the Macintosh SE FDHD requires, but I have no issue with the actual process of replacing capacitors....
-
Re: Polymodding Asus A7V266-E, Capacitor Recommendations?
Maybe, but the cooling will be an issue finding a suitable cooler, also the caps I have installed are probably overkill anyways for this motherboard. I haven't seen anyway to overclock on this board, the clock speeds are pretty locked in, in the BIOS with is ASUS A7V266-E, so I really don't know what my options would be. Fortunately, I have both the adapter for 60mm to 80mm for the CPU and upgraded Arctic F8 fans on the way, seems like the most cost affective way to improve cooling considering the fans are definitely...
Leave a comment:
-
Re: Polymodding Asus A7V266-E, Capacitor Recommendations?
Capacitor replacement was a complete success!!! The first time I've soldered something that small. The blue and silver caps are the new ones I installed today....Last edited by gryffinwings; 09-18-2018, 09:43 PM.
Leave a comment:
-
Re: Polymodding Asus A7V266-E, Capacitor Recommendations?
I've got a temp cooling solution on the card right now and it doesn't seem to have issues, the old one was shot as the fan wasn't working anymore, I found a sort of universal cooling solution on eBay sorta like the ones that Philscomputerlab mentions on the way it looks like the VF700 except for that it is aluminum. But at the moment, the current cooler that I got for the GPU doesn't really get hot and I keep it at 1024x768 resolution and that works fine, but then I probably haven't pushed it very hard to...
Leave a comment:
-
Re: Polymodding Asus A7V266-E, Capacitor Recommendations?
Wanted a computer for cheap, a project and to play games, play music on a good sound card, which I have on order Sound Blaster Audigy 2 ZS. I'm essentially working on my computer skills and now the bonus of my soldering skills.
Computer Specs
Mobo: Asus A7V266-E
CPU: AMD Athlon XP 1700+ Palomino
GPU: ATi Radeon 9500 Pro soft modded to 9700 Pro firmware
RAM: 512 MB PC2100
Anyways I'm thinking the best way to upgrade the fan is to put in a fan...
Leave a comment:
-
Re: Polymodding Asus A7V266-E, Capacitor Recommendations?
Thanks for the information, just want to be sure on the other capacitors, I didn't think it was really necessary to replace them, I won't yet, just replace the bad caps now and see what happens when the new ones are installed.
I already have a taller heatsink with a fan for the northbridge on order, this old northbridge heatsink and fan is a bit whiney. I tend to be obsessive about keeping things cool in computers, and eventually, I'll be buying a set of Arctic F8 fans to replace the fans in...Last edited by gryffinwings; 09-17-2018, 07:11 AM.
Leave a comment:
-
Re: Polymodding Asus A7V266-E, Capacitor Recommendations?
I don't think the board suffered any real damage from me running it, I wasn't really putting it through strenuous use anyways.
Arctic MX-4 is what I have already, it's not like it's expensive stuff. So it will be what I use.
Anyways I haven't desoldered anything yet, no point until I receive the parts, the narrower soldering tip and the solder that I ordered. The pictures posted were for reference for the chipset having what I believe was too much thermal paste....
Leave a comment:
-
Re: Polymodding Asus A7V266-E, Capacitor Recommendations?
I have confirmed you are indeed correct, they are Nichicon HD series 1500uF 6.3volt capacitors, not sure what to replace them with, here a link to the Nichicon HD series capacitors, need help understanding what I am reading here. I'd like to get the appropriate replacement capacitors for these.
[URL="http://www.nichicon.co.jp/english/products/pdfs/e-hd.pdf"]http://www.nichicon.co.jp/english/products/pdfs/e-hd.pdf[/URL]
While prepping the board for desolding and...Last edited by gryffinwings; 09-16-2018, 04:38 PM.
Leave a comment:
-
Re: Polymodding Asus A7V266-E, Capacitor Recommendations?
The larger capacitors I'm replacing are definitely HM series, I will confirm the capacity of the slightly smaller capacitors, I might just do similar capacitors that I'm using on the larger capacitors, just lower capacity.
This is what I was thinking, just need to verify what is currently on the board:
[URL="https://www.digikey.com/product-detail/en/united-chemi-con/APSG160ELL152MJ16S/565-4313-ND/5824536"]https://www.digikey.com/product-detail/en/united-chemi-con/APSG160E...Last edited by gryffinwings; 09-16-2018, 03:26 PM.
Leave a comment:
-
Re: Polymodding Asus A7V266-E, Capacitor Recommendations?
So the ones I circled in red above are the ones I need to replace as the tops are bulging. I, in fact, did order 5 to have a spare just in case, which cap are you talking about on input/high side of the VRM?
So I inspect the problem caps every few days, and it looks like I will need to keep it powered down, noticed one of the caps is just starting to have a slight leak of a yellow substance at the top of the cap. So I will not be putting any power through this board until I have replaced the caps...Last edited by gryffinwings; 09-16-2018, 12:26 PM.
Leave a comment:
-
Re: Polymodding Asus A7V266-E, Capacitor Recommendations?
Thanks again, for all the excellent information, this has been very educational for me.
So at the moment, the capacitors I chose with the help from people from another forum will be very experimental. Here's a link:
[URL="https://www.digikey.com/product-detail/en/united-chemi-con/APSG160ELL222MJ20S/565-4315-ND/5824538"]https://www.digikey.com/product-detail/en/united-chemi-con/APSG160ELL222MJ20S/565-4315-ND/5824538[/URL]
Fortunately, caps aren't very expensive,...Last edited by gryffinwings; 09-16-2018, 10:03 AM.
Leave a comment:
-
Re: Polymodding Asus A7V266-E, Capacitor Recommendations?
What happens if you go to low, would 8mOhms be ok?
The Northbridge fan does work, but I have a better heatsink/fan solution on the way to keep it cooler and reduce noise from the old cooler, it's a bit whinny. I figure lowering the northbridge temps will keep the board more stable.
Yes, I'm just playing with it, I know it's old, but it was cheap and it works with the really old games I intend to play, so no biggie. If anything I'll buy another computer if I want something more...
Leave a comment:
-
Re: Polymodding Asus A7V266-E, Capacitor Recommendations?
Can I use an ESR rating of 8mOhms? What happens if you go too low? What benefit do I get from adding another capacitor to the board, I was under the impression that you shouldn't do that. Also, what is involved in adding another capacitor, sorry for all the questions, just trying to learn more about electronics, I have a basic understanding from my navy training....
Leave a comment:
No activity results to display
Show More
Leave a comment: