Need help identifying Yamaha DX7IIFD "C33" part

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steamed_hams
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Need help identifying Yamaha DX7IIFD "C33" part

Post by steamed_hams » Tue Nov 25, 2014 5:49 pm

I need help repairing my Yamaha DX7IIFD. I was installing the E! Grey Matter Response card, and I had to pry out the IC23 chip. While doing so, I heard a crack. When I looked down, I had saw that I broke an internal piece by accident!
http://imageshack.com/a/img912/348/vK6OX7.jpg
http://imageshack.com/a/img540/6044/bZxvvx.jpg
http://imageshack.com/a/img540/350/CZhUh7.jpg

It's a ceramic disc capacitor that says "16x 104m" on it. It's listed in the service manual as part C33 on the DM board, but it doesn't list the name as far as I can tell. I need to know the specific name of this component so I can find a replacement ASAP if it's even possible any more.

This site is my last resort, since one site banned me for no reason and another rejected my topics. I'm very worried my keyboard might already be dead from static electricity.

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Yekuku
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Re: Need help identifying Yamaha DX7IIFD "C33" part

Post by Yekuku » Tue Nov 25, 2014 6:39 pm

Looks like an ordinary ceramic capacitor 0.1uf with +/- 20% tolerance that is used for decoupling ICs , nothing special about it.
Even with a small piece cracked, I am pretty sure it will hold most of its capacitance, so the unit should work.
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steamed_hams
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Re: Need help identifying Yamaha DX7IIFD "C33" part

Post by steamed_hams » Thu Nov 27, 2014 3:08 am

Looks like an ordinary ceramic capacitor 0.1uf with +/- 20% tolerance that is used for decoupling ICs , nothing special about it.
That explains the 104m (I double-checked with a guide), but I only see orange capacitors without the "16x" and no guide mentions anything about that. I don't see any green capacitors like it and I don't want to take a chance of ruining my keyboard with the wrong component.

I'm not going to risk turning on the DX7II, not when I'm worried static has already destroyed it and I still need to get the E! GMR working. I just need the replacement part. The capacitor itself is very highly damaged.

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