Check that you didn't use a 78M06. They are only rated 1/2 amp, whereas the 7806 is rated 1 amp. Gary McCartney McCartney Electronics Guelph Ontario Canada Est. 1984 email: gary (at) number63.ca J Silverman wrote: > > This 1996 combo damages the AN7806 regulator after about 30 minutes of > operation. Classic symptom is blank screen and a buzzing noise. Replace > IC651 and its good for about another half hour. I thought the only thing > that can damage that regulator is excessive input voltage because it has > built in current limiting and thermal shutdown. Changed C653, 220/10, JIC > IC651 was going into oscillation. No difference. > Jerry Silverman > Greentron Inc > 4 Newland Ave > Greenville SC 29609 > 864 232 3889 > Fax 271 2080 > mailto:greentron@xxxxxxx > > ***************************************************************************** > 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/ -- ***************************************************************************** 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/