Bad MN3207's

[electricstorm]

Anyone receive bad MN3207's from Polida on eBay?

I ordered 16 sets of MN3102/MN3207's from them and after spending a few hours on a project I am working on, decided to test them in a known working delay using the same BBD's. Out of the 16 MN3207's, only 4 had delay (although shorter delay time than the original MN3207 in the delay circuit). The rest just passed a dry signal with no delay. Anyone else have this problem?

Jim

[culturejam]

Mn3207 is a really short delay. It's not usually used for an actual delay/echo type circuit. The shortest is usually MN3208.

[Scruffie]

Yeah and the next shortest is 512 stages which is really fucking short and the chip (MN3204 I think?) is rarer so I doubt they rebranded it.

Still, you got fucked over if 8 don't work... I assume you rebiased for each one?

[marmaliser]

I have 5 sets in a drawer from him.  I will test them out in my pork barrel as soon as.

[GermanCdn]

I've used their sets in two pork barrels and a 3207 from them in a Current Lover, no issues with either.  Haven't used them in dedicated delay circuits.

[electricstorm]

That's kind of odd, wonder if he just got a bad batch from his supplier?

I have four working chips out of 16 and one original chip that I'm using
in my flanger clone.

Any other reliable sources for the MN3207's?

[electricstorm]

I'm going to place an order with Smallbear for the alternates he offers (BL3207 and V3207D) and try those instead.

[PimpMyTone]

I'm going to place an order with Smallbear for the alternates he offers (BL3207 and V3207D) and try those instead.

How many do you need ?

[electricstorm]

I needed two of each (MN3102, MN3207). From what I can tell, the MN3102's are fine, just the MN3207's were bad (except four of them). So technically, I need two for the current build. Ordered the extra for other projects later on but guess I stay away from Polida for these.

Jim

[cabintech]

FYI, we carry Coolaudio V3207 and V3102 exact replacement chips and guarantee every one is good. No minimum order and we ship worldwide. You can find us at:
http://www.cabintechglobal.com

and we also sell on Ebay if you prefer that marketplace.
-Mark