Messages

[Console Repair/Mod Center / Re: Problems with Turbo Duo system]

Mobius: That makes sense about the laser problem being there, and me introducing the capacitor problem when I installed new ones. Looking back, I wonder if I accidently cooked some of the caps that I was replacing. I realized after I finished soldering I had my iron on 30w. I should just order some direct replacement caps and try again.

-Bill

[Console Repair/Mod Center / Re: Problems with Turbo Duo system]

Thanks for the input guys!

The funny thing is the CD Audio worked fine volume and clarity wise (only cut out at random). Only after I replaced a handful of the caps did I get the low volume and scratchy audio. I'll go ahead and replace the other caps that were suggested, and try to adjust the later.

Now when doing the laser adjustment, I want there to be less resistance then there currently is? Correct?

I'm going to go ahead and order a new laser for the unit... I'm sure the current one is soon to kick the bucket.

-Bill

[Console Repair/Mod Center / Problems with Turbo Duo system]

Hello everyone,

I'm new the the PCEngine FX message boards. I've found these forums to be an outstanding resource so far. Last week I got my first Turbo system (a Turbo Duo). It had known problems before I got it, but I wanted a new project to tackle. Prior to me attempting any fixes, the CD audio in CD games would randomly cut out. I did some research, and found the post here where it recommends replacing the caps in the audio amp area. I did the mod outlined here:

/r9x600copyxo4.jpg

I went ahead and got some new capacitors for the job, however my electronics shop didn't have direct matches. I was able to match the uF's, however the voltage on the caps I bought were all 50v. I desoldered the old caps, and put in the new ones. I triple checked my work for polarity, bridges, solder splashes and loose connections. When I fire up the system now, the CD audio plays consistently, however it is very quiet and has lots of distortion (scratches).

Any suggestions on what I should check? Is it possible the caps I got were too high in voltage for the amp? Or, is it possible that some of the caps I purchased were bad?

On a side note, since I've owned the system, you have to flip it upside down in order for it to read CD's. Is this a common issue? Does this indicate the laser is on its last legs? Are there any recommended fixes for this?

Thanks for any help!
Bill