Found a shorted Zener, D528, in the opto isolator circuit cold ground side. Can anyone help ID the zener, the numbers on it look like 55B or B55. Thanks, ************************************************** Jim Myers Since 1972 Telrad Electronic Services Co. Fort Wayne, IN 46815 ************************************************* ***************************************************************************** Classifieds! Buy or Sell! http://sell.tech-assist.org The Tech Address Book: http://www.tech-assist.org/secure/tip/contact.htm Add a Repair Tip Here, or Change/Remove your Email Address: http://www.tech-assist.org/secure/tip/main.htm Lost Password: http://www.tech-assist.org and select "Lost your Login Info?". Email Archives: //www.freelists.org/archives/techassist/