When I first started and knew no thing about electricity I read something about a pull up and tied my MCLR directly to the +5 rail. That screwed it up for a while, but it came back. -----Original Message----- From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf Of Olin Lathrop Sent: Friday, August 19, 2005 2:44 AM To: Microcontroller discussion list - Public. Subject: Re: [PIC] fried 16F88? Rob Hamerling wrote: >> Plugging it in backwards could do that. > > Want to be funny? Other possibilities I did NOT ask about: feeding it > with 230VAC, hitting it with an axe, heating it to 1500 degrees C, etc. > > I didn't remove the chip from the board or made any other hardware > changes.... could you answer the real question, please? I don't owe you anything, and you should keep in mind that you're the one asking for free help. And, I was serious about my comment. Anyone who has plugged enough chips into sockets has plugged a few of them in backwards. I've done it with PICs. The few times this has happened, I have noticed they got really hot. It's not hard to imagine the PIC might not respond as specified to programming commands (or anything else) after that. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist