REPAIR GUIDE - TurboExpress: Sound Fix

[Platinumfungi]

Nice work Charlie  Thanks for sharing the info 

[milkmanv1]

Oh man, thanks soooo much D-Lite, Who woulda thought changing something as simple as ONE cap,  could go from no sound, TO LOUD SOUND! Thanks so much, you saved me a buncha money (and not on my car insurance!!)

[TheClash603]

Yikes, I figured the explanation to fix the problem would be "shake the unit" or something an electronic moron could fix.  Looks like I will have to stick to playing my Express with headphones...  this looks like rocket science.

My broken Twin Famicom is also crying

[override]

Yikes, I figured the explanation to fix the problem would be "shake the unit" or something an electronic moron could fix.  Looks like I will have to stick to playing my Express with headphones...  this looks like rocket science.

My broken Twin Famicom is also crying

I just recently posted very good pics of doing a full cap replacement - HERE, if you would like to refer to them. I can do the repair for you aswell, PM me if your interested. It would run you S/H, Parts and Labor - $35.

[ApolloBoy]

I just fixed my new TurboExpress and I just wanted to say that you can substitute the 100uF caps with smaller ones. I used 68uF caps in mine and the sound is nice and loud.

[christoph]

So the sound and headphones were not working AT ALL on my Turbo Express and I did this mod - the sound now works in both the headphones and speakers - but its the infamous low sound. Low in both speakers and headphones. What do you recommend doing?

[blueraven]

Start looking around the board for capacitors that have broken or corroded legs; check for electrolytic fluid on the board. I'm guessing that you may have another bad capacitor. the 2 big 100's around the sound caps have been bad in the last 4 units I have opened up  ~ but be careful and work very slow ~ The traces love to come up in this area.

[christoph]

100uf 35v caps will work for those right?

and I replace which ones, green or blue: (I already removed one cap in the green and replaced another with the guide)

[blueraven]

The area in green. Start there in your search.

The two tiny caps in the green area are 33uf (microfarad) capacitors - Those are the Sound Caps! Replace them first. You can upgrade them to 45uf to "Hot Rod" it for sightly louder volume.

You're getting close.

[christoph]

Nice. I think I'm gonna upgrade it to 45uf. Thanks mate.

[blueraven]

Correction, 47uf. No problem; Red Ghosts capacitor chart will help too, here's the link:

http://www.pcenginefx.com/forums/index.php?topic=5303.0

After staring at it for about 15 minutes, everything should start to make sense.

[christoph]

lol

this website is so awesome

[nat]

Actually, all the caps circled in green are in the audio circuit, not just the small ones...

[christoph]

Where is the best place to buy capacitors online? My local radioshack does not have a few of these caps and there is no other local place to shop at.

:/

[kattare]

I got mine in bulk from www.allelectronics.com.  A lot of folks swear by www.digikey.com.  Dunno if that helps or not.