unknown

asked Jan 6, 2010 at 6:58am
Hp HP LaserJet 4

HP PSC 1610

Carriage keeps jamming. Have cleaned under cartridges with alcohol. Appears to be ink collecting,hardening then causing them to jam. Will work fine for a few days then have to do it again. Printer 4 years old and used for home only. Should I try some other repair or just replace?
Thanks!