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Rebote 2.5

Started by mattlee0037, February 09, 2014, 11:01:57 PM

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Morgan


Quote from: mattlee0037 on April 18, 2014, 02:18:27 PM
Ok so the only thing I found was that in the feedback loop is a 470k resistor instead of a 510k resistor (again I didn't build this it's a friends). Anyone want to explain what the feedback loop does and how this would affect it?
Part of what sets the gain in the input amplifier. 470K is within 10% of 510K and it's doubtful you'd hear a drop in volume because of that.  IOW - 470k is fine there.

If it were me, I'd reflow the solder joints on and around the TL072 and clean that flux off the bottom the pcb with some alcohol and old toothbrush.
Moderator at BYOC, still sometimes futz around with Leila Vintage Electronics.

Old Blog...

mattlee0037

Will do, I'll reflow that stuff sometime this week and if that doesn't bring it back I'll order another TL072 in my next order.

davent

Nothng else you could borrow a chip from or try the Rebote's chip in?
"If you always do what you always did- you always get what you always got." - Unknown

If my photos are missing again... they're hosted by photobucket... and as of 06/2017 being held hostage... to be continued?

mattlee0037

No, I've got a quad TL op amp for a barebones Klone, but that's the closest thing!

flanagan0718


Quote from: mattlee0037 on April 20, 2014, 05:41:50 AM
No, I've got a quad TL op amp for a barebones Klone, but that's the closest thing!

PM me your address and I'll send you a new TL072 an PT2399. I have a bunch. I'll take the 2 out of the working board I have


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mattlee0037

HUGE shoutout to Mike for helping me debug this. He sent me a TL072 that I just popped in and it works perfectly! Super awesome!

flanagan0718

#21

Quote from: mattlee0037 on April 26, 2014, 02:15:44 AM
HUGE shoutout to Mike for helping me debug this. He sent me a TL072 that I just popped in and it works perfectly! Super awesome!

Glad to hear it worked enjoy it!!!


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