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NEC TG-16/TE/TurboDuo => TG/PCE Repair/Mod Discussion => Topic started by: atman on May 10, 2017, 08:07:18 PM

Title: Sync from DUO
Post by: atman on May 10, 2017, 08:07:18 PM

Hi!

I have used sync from the 6260 pin44 and it was great. Just direct connection to the RGB scart-sync.

After I recapped it the duo the signal seems a bit noisy, only on black screen. When displaying black screen its a lighter tint on top and its a bit grainy.

My question is, what route should I use? I have used regular composite before with great result.
I want as great picture as possible.

1. Should I try with a 220uF capacitor?

2. Switch to regular composite, as I have done in the past (with IFU rgb mods)

3. Use the composite signal with a sync-stripper.

Title: Re: Sync from DUO
Post by: Keith Courage on May 11, 2017, 12:17:02 AM

A 220uf cap or larger should help with grainy picture. Regular composite should work okay as well with a black DUO.

I've have never used a sync stripper so I can't comment on that.

Title: Re: Sync from DUO
Post by: atman on May 11, 2017, 01:09:17 AM

Thanks for the reply.

I'm gonna try that 220uF cap. When its not grainy its really crisp picture.
Might be the easy solution.

Title: Re: Sync from DUO
Post by: atman on May 11, 2017, 08:16:02 PM

Tried it out last night and black are pitch black now. Looks great!

One thing I wonder about is when using the CD, sometimes on black "load" in-between screen the black gets a bi grainy.
Noticed that my Genesis CDX are the same. Is that some kind of No signal when using CD-drive?