Greetings -
I just got this off eBay. To my amazement, it does not have a capacitor. Instead, where the cap should be is a burn mark.
However, it seems to work fine.
What do you guys make of this? Safe? Issues?
thanks
Richard
my SR-JV80-04 Vintage Synth board has no capacitor, safe? Issues?
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- Posts: 14
- Joined: 07:45, 5 May 2018
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- Posts: 3
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Re: my SR-JV80-04 Vintage Synth board has no capacitor, safe? Issues?
First, I am not a technician, and my input here is just my initial reaction. As far as I know, a missing component would cause the circuit to break, and no longer work. Maybe the capacitor works in addition to a connection that underlies it - I have no idea. It looks like that capacitor exploded and was removed.
I do not think it would be safe/reliable to use long-term. There are repair videos online by pros where a new capacitor is soldered in. Nobody says "you don't even need this thing."
I do not think it would be safe/reliable to use long-term. There are repair videos online by pros where a new capacitor is soldered in. Nobody says "you don't even need this thing."
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- Posts: 14
- Joined: 07:45, 5 May 2018
Re: my SR-JV80-04 Vintage Synth board has no capacitor, safe? Issues?
Thanks for the reply. The board somehow works fine, it's been in use now consistently ever since I posted this thread. How/why it can work perfectly without its capacitor is beyond me, but it does work, just fine.
Re: my SR-JV80-04 Vintage Synth board has no capacitor, safe? Issues?
The capacitor purpose is to filter or smooth the current applied to the chips.
There's a reason this one has blown up.
https://gearspace.com/board/electronic- ... -card.html
I wouldn't use the card without putting an over-specced 100uF 16v replacement capacitor first.
The eBay seller should be notified and evaluated accordingly.
There's a reason this one has blown up.
https://gearspace.com/board/electronic- ... -card.html
Which mean you're stressing the other components on the board, which may lead to future problems just because of a missing $0.50 cap.Typically on boards like this there's a larger cap (C5) where the power rails enter the board, then smaller caps near each chip.
I wouldn't use the card without putting an over-specced 100uF 16v replacement capacitor first.
The eBay seller should be notified and evaluated accordingly.