There are a few things to check-
1. Is the light on the resetter flashing red or green? If so, then the batteries are working properly.
2. Are the prongs being fully compressed? If YES, this can make it more difficult for the chip to actually reset. A light/slight compression is the best practice.
3. Is the chip clean? Oil from a thumbprint is enough to cause the chip resetter not to make even contact. Use rubbing alcohol and a cotton swab.
If the chip resetter is still signalling red, you can try the following to get the chip to reset-
1. Take out all cartridges, one at a time from right to left.
2. Power off the printer and unplug from the wall. Leave unplugged.
3. For the chip that is not resetting, take the ink tank out of the frame and pop it in and out of the frame a few times.
4. With the printer unplugged, press and hold in the power button for 5 seconds. This resets the internal memory of the printer.
5. Put the cartridges back into the printer, one at a time from left to right.
If your printer still will not read the slot-
1. Clean the contact port inside the printer using a cotton swab and rubbing alcohol. When you remove the cartridge from the slot, there are vertical pins that are where the chip make contact. Clean these.
2. If the above does not work, try inserting an Epson OEM cartridge for that color slot. If you do not have one on hand, you can typically find one at any local office supply store.
3. If the Epson OEM reads, open Accurip and go to File > Setup or File > Edit Configuration and uncheck the slot. Click here to submit a ticket with the manufacturer of the cartridges for further assistance on the frame that isn't reading. If the Epson OEM cartridge does not read, you will need to contact Epson directly for further troubleshooting. Their contact info is listed on their site, www.epson.com