Cleaning up capacitor leakage
I'm doing some OGXbox refurbs and the clock capacitors (PowerStor Aerogel) notoriously leak all over the board. I'm not sure what you call the electrolytic fluid which comes out and gets all over the circuit board, but I would like to know the best process for cleaning it up. Should I hit it with vinegar or isopropyl? Or both? Or something else?
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Re: Cleaning up capacitor leakage
just isoprpanol -
Re: Cleaning up capacitor leakage
99% IPA or Acetone. Depending on how stubborn it is.Comment
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Re: Cleaning up capacitor leakage
Okay, thanks!Comment
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Re: Cleaning up capacitor leakage
be carefull with acetone, you can take the markings off some parts with itComment
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Re: Cleaning up capacitor leakage
Don't forget try clean water too...especially since failed capacitors tend to use aqueous (i.e. water) electrolytes and water will dissolve it once more.Comment
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Re: Cleaning up capacitor leakage
I would recommend cleaning using acetic acid if it leaked on the board.
Every time I do I can see bubbles and hear fizzing as I put it on the areas with leaked electrolyte, so it does a chemical reaction that much better removes it.
Of course you need to clean very thoroughly after with IPA as acetic acid will otherwise do damage on its own...
Here an example of it in action:
https://www.badcaps.net/forum/showpo...1&postcount=34"The one who says it cannot be done should never interrupt the one who is doing it."Comment
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Title:
Capacitor detached from PCB – RTX 2070 Super Founders Edition
Description:
During maintenance on an RTX 2070 SUPER Founders Edition, I found a capacitor lying on my desk after reassembly.
I did not notice it detaching, so I am unsure of its original location on the PCB.
Procedure performed:
- Removed backplate
- Cleaned heatsink and PCB with isopropyl alcohol + soft ESD brush
- Reapplied thermal compound
- Reassembled card
Observed behavior after reassembly:
- GPU powers on and operates normally under... -
Hi people, I hope this is the correct spot to post this, I'm new to the forum.
I have an RTX 3080 Founders Edition which has a burnt up capacitor (it was in parallel with another capacitor which appears damaged too), so I am hoping to be able to identify the capacitor values and order replacements.
I hope these photos make it clear which component I am referring to:
(yes, the soldering is a bit botched from removing the blown one, I know)
I have found the board schematic (attached), but there does not seem to be a boardview available. I have never... -
I have acquired a used Dick Smith Q-1760 power supply - although the OEM is Manson Industrial
It has at least one problem.
The voltage control potentiometer VR2, 50K is faulty - going high resistance / open circuit in the CCW end and leading to the output voltage jumping around.
I have already ordered a replacement potentiometer, so that's not an issue.
Now, I want to replace all three electrolytics on the PCB as they are CapXon and I don't trust them so much, I will replace them with something better while I've got the thing apart anyway.
All are CapXon... -
I replaced some capacitor which is located on optical pickup pcb which is shown in the table below(PCB #2).Because it have been out of order.
Now,It works very well,But I just have found that all caps (6svpc100my and other part number as well) ,which is shown in the table below, has ultra-high ripple current spec.
It is not able to obtain any capacitor which can be a substitute for this ultra-high ripple current nichicon capacitor.
So I replaced it with samxon and rubycon's general capacitor(GP,YXA series).
I know that these capacitor will not last as long as nichicon capacitor... -
I desoldered samwha NF capacitor(50v 5.6uf) from PCB circuit of 29inch CRT TV which have symptoms of no display after I heard sound of inrush of current to TV whenever I switch on this television.
I measured ESR value of this non-polarized capacitor(samwha NF capacitor 50v 5.6uf) by means of MESR-100 ESR meter and It displayed 0.3 ohm
And When I measured its capacitance with digital multimeter and LCR-T4 Mega328 meter, It displayed 10uf from DMM and 8uf from LCR-T4 meter.
I found catalogue of samwha capacitor(samwha-catalogue_3.pdf file), which is attached to this thread,...
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