music6000

Personally I use CRC CO Contact Cleaner, No brushing required: Just spray & watch it disappear & a 2nd squirt just in case any debris is...

It would pay to clean the back of the board, there is a lot of debris around that PT2399!

No, continuity to ground doesn't sound right at all. Which side of R16 on the PCB are you losing signal? Toward the 2399 or toward the...

Make sure the ic is seated in the socket correctly and that a leg didn't miss the socket hole too. Also check your component values in...

Do you have continuity to all the red dots?

I'm noticing a couple other potential issues on your board. First it looks like you might have a bridge between R15 and R16. Second, it...

At the risk of sounding like a complete suck ass... You are awesome Dave!!! Thank you for taking interest in my original moded circuit...

Schematic has been corrected. (y)

😖

Something like this:

I did find that when I had initially all set them to 4.5v it sounded pretty good. Sometimes I wasn't sure if I was making it sound any...

Now you have legit 201's, did you set them all to 4.5v to start with, then adjust them again as the they will go off voltage as you go...

It's definitely got the JCM800 Gain available. Did you try turning the Tone trimmer as that has a massive effect on the Sound, mine is...

Yep, I used a Power Line for a couple years. I could hear the digital signal in my workbench Princeton amp from time to time. I...

If you like Aion, they do version 1 & version 2 of the Formula 5, your PCB is definately a Clone of the Formula 5...