anyone willing to help me fix a pimeta?

[skatewabbit]

started a pimeta a while ago, never got it working properly, life got busy and the project had to be abandoned. now i have some time and would love to get it working.

anyone willing to help me out?

-i can't see any obvious soldering errors
-light comes on fine
-dead silence, no sound at all

 

[MrMajestic2]

Quote:

Originally Posted by skatewabbit /img/forum/go_quote.gif started a pimeta a while ago, never got it working properly, life got busy and the project had to be abandoned. now i have some time and would love to get it working. anyone willing to help me out? -i can't see any obvious soldering errors -light comes on fine -dead silence, no sound at all http://i16.photobucket.com/albums/b4...0folder/01.jpg

Well, you dont have an opamp for the left and right channels installed. That might be something to check first

Also, you have an opa637 opamp in the ground channel which might be problematic.

 

[Fitz]

Perhaps that's the L/R opamp floating loose in there?

 

[tangent]

Also, it looks like you're running the input wires to the wrong place. When using an RK097, you use IL2, IR2, and IG2.

 

[n_maher]

Quote:

Originally Posted by tangent /img/forum/go_quote.gif Also, it looks like you're running the input wires to the wrong place. When using an RK097, you use IL2, IR2, and IG2.

I was going to mention that, then I saw the floating opamp and figured we've got all sorts of issues to address here. I suggest a good place to start with this would be to go back and reread all of the PIMETA instructions on Tangent's site and come back once you've got those issues covered.

 

[FallenAngel]

Uhm.... yeah, opamps, wires, R11 is missing for BUF634.

 

[joneeboi]

OPALR could very well be on the bottom of the board, but we can't tell with just this picture. That "floating opamp" is probably a DIP8 TLE2426(CLP?) wired as it should be when going from DIP8 to TO-92. Also, R11 is optional, but most importantly, (s)he has the same problem I had a couple months back, wrong inputs.

 

[skatewabbit]

totally forgot to take a photo of the backside, sorry. OPALR is indeed on the back there.

that floating chip is a TLE2426 DIP8 wired to be a TO-92 (i got the order wrong) A little hard to tell from the picture but i couldnt get a better angle. this camera doesnt do great macro work and my other camera is "temporarily" dead (anyone want to help me fix that when we're done here??)

which leaves the input wiring

which i think may be the remaining culprit here. im going to switch those to IL2, IR2, and IG2 and hopefully that will make a difference.

thanks for all the responses so far, they're much appreciated.

 

[skatewabbit]

haha! great success!

i switched those wires and everything seems to be working prefectly now. i can't tell you how awesome this is, thank you everyone that helped.