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NEC TG-16/TE/TurboDuo => TG/PCE Repair/Mod Discussion => Topic started by: MNKyDeth on July 29, 2016, 12:43:32 PM

Title: PC Engine Duo cermic cap question
Post by: MNKyDeth on July 29, 2016, 12:43:32 PM

I have a board here that I think I have some bad ceramic caps on at location C618 and C617 but I cannot find good values for these caps anywhere. uF rating or volts.

They are next to IC505

Any help is appreciated.

Title: Re: PC Engine Duo cermic cap question
Post by: Fidde_se on July 30, 2016, 07:09:45 AM

What makes you think they are bad?

Title: Re: PC Engine Duo cermic cap question
Post by: MNKyDeth on July 30, 2016, 09:13:40 PM

One fell off the board from corrosion in that area. The other one is very discolored compared to any other boards I have. I just cant seem to get readings that are the same across the couple of machines I have here.

Anyways, I found the one that fell off under the pcb and soldered it back on. The sound works but it a little low. So I am going to check other areas for now. But I still wouldn't mind knowing the values of those ceramic cap locations.

Title: Re: PC Engine Duo cermic cap question
Post by: ltpitt on August 04, 2016, 10:30:28 AM

I hope this can be of help:
https://www.dropbox.com/s/piekr98spi1foxt/pcengine.jpg?dl=0 (http://www.dropbox.com/s/piekr98spi1foxt/pcengineec75.html?dl=0)

User Keith Courage repaired my beloved Pc Engine GT and now it roars, happily.

Good luck!