Question about surface mount caps for repairing X-Men sound chip
So today I fired up my 4 player board and while it still had sound, some electrolyte began leaking from a few of the caps on that damn custom chip. I had done a little digging into the issue on a spare 6 player board and I can see that it wouldn't be too hard to switch out the caps. My question would be on the cap values. Here's John Robertson's page with the schematic for that chip.
It lists the caps' uF values but nothing about the voltage. Now the only thing I see for voltage to the chip is the vcc so am I correct that as long as the caps are rated for 5 volts I'll be ok? I've seen a few websites with these type of surface mount caps so finding them shouldn't be an issue. Also, I physically counted 10 caps on that chip and looking at the schematic I only see 9 labeled. It looks like in the upper right of the schematic there is a cap that's not labeled in value. Is it the same as the 0.1uF cap to its left? What do do the stripes mean on the one on the right? So here's what I would say is my shopping list if I wanted to change all the caps while I'm at it. I may just change the few that I know leaked, but I want to be prepared.
Edit: A little google search turned up a post on RGVAC confirming that these need to be 12volts or higher caps. Makes sense given that it's sound related.
One 10uF 12v cap
Four 100uF 12v caps
Two 1000uF 12v caps
Tree 0.1uF 12v caps (Assuming I am correct about that last cap's value...the one in the upper right corner next to the other 0.1uF cap)
Any help is appreciated. Time to save these boards!
Edit: If anyone has any better methods than just a razor blade to remove that black coating on the chip, I'm all for it.
So today I fired up my 4 player board and while it still had sound, some electrolyte began leaking from a few of the caps on that damn custom chip. I had done a little digging into the issue on a spare 6 player board and I can see that it wouldn't be too hard to switch out the caps. My question would be on the cap values. Here's John Robertson's page with the schematic for that chip.
It lists the caps' uF values but nothing about the voltage. Now the only thing I see for voltage to the chip is the vcc so am I correct that as long as the caps are rated for 5 volts I'll be ok? I've seen a few websites with these type of surface mount caps so finding them shouldn't be an issue. Also, I physically counted 10 caps on that chip and looking at the schematic I only see 9 labeled. It looks like in the upper right of the schematic there is a cap that's not labeled in value. Is it the same as the 0.1uF cap to its left? What do do the stripes mean on the one on the right? So here's what I would say is my shopping list if I wanted to change all the caps while I'm at it. I may just change the few that I know leaked, but I want to be prepared.
Edit: A little google search turned up a post on RGVAC confirming that these need to be 12volts or higher caps. Makes sense given that it's sound related.
One 10uF 12v cap
Four 100uF 12v caps
Two 1000uF 12v caps
Tree 0.1uF 12v caps (Assuming I am correct about that last cap's value...the one in the upper right corner next to the other 0.1uF cap)
Any help is appreciated. Time to save these boards!
Edit: If anyone has any better methods than just a razor blade to remove that black coating on the chip, I'm all for it.
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