mockingbird wrote on 2024-10-20, 13:41:Yes, get that Rubycon, and try to stuff it in instead of the 4mm cap. I think I did that with these units. But also buy this, […]
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Kvopper256 wrote on 2024-10-20, 10:57:
That Wurth cap is the be the best at Farnell that's not out of stock. OR should I get this THT Rubycon instead?
Yes, get that Rubycon, and try to stuff it in instead of the 4mm cap. I think I did that with these units. But also buy this, and bend the leads to make it a through-hole capacitor in case you cannot get the 5mm part to fit.
What kind of ESR values should I look for? I need to replace 2x 16V 2200uF caps. Also, apparently the 10V caps I used were low-ESR (Samwha WL), so I don't need to replace them, right? Or shoud I replace them with caps that fit into the space better (the current ones are too wide)?
Yes, use 10mm wide parts if 12.5mm is too wide. For ESR and ripple valued, you need to match or exceed the originals. So for example, Teapo SC parts in a 10x25mm diameter have a ripple rating of around 1400mA and an ESR of approximately 40 mOhm. Find the part you are considering, and look up the spec in its datasheet to see if it's adequate. If the datasheet says "general purpose" at the title, then it's not what you're looking for.
So I put in all the caps on +5Vsb and 5 caps on the main rails and now it's even worse - it still takes several seconds to start up but the +5Vsb voltage spikes to 6,73V instead of around 5,4V. When I marked which caps to replace with which (I desoldered them some time ago) I used, among other things, a pink pencil, and pencil particles got into the 50V 4,7uF cap's holes. To be sure that the holes were clear I put the capacitor in them and out of them several times and wiggled it around and the legs looked clean. Am I an idiot?
EDIT: it'a problem with my multimeter. It spikes to 6,6-6,8 volts when it's connected to a 5V supply.
