From: utzoo!decvax!duke!harpo!floyd!cmcl2!philabs!sdcsvax!sdchema!will Newsgroups: net.micro.zx Title: Re: Help! Do I have a bad 16k RAM pack? Article-I.D.: sdchema.168 Posted: Fri Sep 24 19:52:44 1982 Received: Thu Sep 30 08:04:55 1982 References: houxb.158 I had a few of those symptoms with my ZX81 when I first recieved it. I finally ended up sending it back with the computer, after having gotten a replacement which did the same things. This is probably what you need to do, but may I suggest the following things: * Clean the connection board * This could very well be your problem. Dust it off as well as you can, then go over it with a typewriter ereaser (NOT a pencil ereaser...I used to know why but forgot, something about having silicon or something). If you want, you could ask the guy at Radio Shack if he has any- thing for it, he probably does. * Clean the connections on the RAM pack* (if possible) Don't strain yourself for this one, but it couldn't hurt to go over them with an airbrush. * If you do send it back * Mark the back of it with chalk or something to see if they send you a new one, or attempt to repair it. Chances are they will throw the old one in a box and send a new one. This info could come in handy if you have to yell at the managers. Good luck, Will D.