freestompboxes.org

Hello guys!

I have an issue with my Ibanez PT9, it supposed that the integrated are not working anymore and I need to replace all of them.

The number/serial of the chip is 3403AD JRC 3021.

I found this on eBay, but I don't know if those are going to work. Do you have any idea related to this?

https://www.ebay.com/itm/5PCS-RC3403AD- ... SwnGJWTzV4

https://www.ebay.com/itm/NJM3403AD-JRC- ... XQVhFR9~wR


Thanks!!!

How do you know the opamps are bad? Have you debugged the pedal or are you just guessing?

Any 3403 quad opamp will be fine you don't need to spend so much on them, you could also use other types such as a TL074 apart from in the opamp controlling the LFO where a TL064 or LM324 will be more suitable.

Futurlec has the MC4303 for $0.50 a piece and smallbear has the JRC4303 for $1.05 a piece.

Avoid those ebay sellers at all times! Counterfeits are coming your way....

PT9 you said? Start of replacing all electrolitic capacitors before pointing at the component with the higest pin count.