i recently purchases 4 carts and ink for an epson 3800. After install: 2 IJM carts showed up and 3 carts show NOT INSTALLED That is the 2 IJM carts and one very new Epson cart. All OEM carts were working prior to installing new carts.
Note: i have read the recent post that has a cart problem very similar and checked the reset chips as you recommended including 3 tabs / 3 pin length / and red check on box. See below for info
1 MB OEM OK
2 PB OEM OK
3 LB OEM OK
4 LLB OEM OK
5 C IJM OK (no red check on box)
6 M IJM OK (RED check on box)
7 LC IJM SHOWS CART NOT INSTALLED 3 tabs OK / pin length OK (no red check on box)
8 LM OEM SHOWS CART NOT INSTALLED (OK when LC and Y back in org. OEM carts.)
9 Y IJM SHOWS CART NOT INSTALLED 3 tabs OK / PIN NOT SAME LENGTH (no red check on box)
7 LC and 9 Y OEM carts were low but i had not received a low ink warning or out of ink warning, maybe 10-15%. The light Magenta in between them is very new. 2 colors were out and the printer had sat awhile so bought 2 OEM to make sure that the head was in working order and that i would have OEM chips that were not out (dead)
I tried reseating the chips 3 times I got the same error. I tried removing the LC and Y cart and the OEM still didn't show up. I tried removing Just the LC and then just the Y and same. those 2 plus the OEM LM did not show up. I PUT the LC and Y chips back in the OEM carts and THEY SHOW UP...... including the OEM LM!
The LC and Y reset chips plastic boards have the 3 small tabs mentioned and they seem to snap in fine. The LC cart 3 pins look the same length. The Yellow 3 pins DO NOT look exactly the same length!
So guessing that it is a contact problem? Not sure why the OEM cart between them dose not show up but might be how the software reads the carts.
PS Also: There is no discernible text printed on either reset chip! But i did them one at a time so seriously doubt they got swapped
Need to get printer going ASAP