I snagged a copy of them a while back from the Yahoo group and put them in my Dropbox hierarchy. Not my scans, I don't have the originals. Assembly manual in two parts: https://dl.dropboxusercontent.com/u/391444/Vintage/heathkit/et-3400/yahoo-g… https://dl.dropboxusercontent.com/u/391444/Vintage/heathkit/et-3400/yahoo-g… Software manual in two parts: https://dl.dropboxusercontent.com/u/391444/Vintage/heathkit/et-3400/yahoo-g… https://dl.dropboxusercontent.com/u/391444/Vintage/heathkit/et-3400/yahoo-g… On May 3, 2015, at 9:08 PM, drlegendre . <drlegendre at gmail.com<mailto: drlegendre at gmail.com>> wrote: Thanks, I'll look into it - but I haven't a Yahoo! login, nor do I desire one at this late date.. Can someone with access download & serve the relevant files? On Sun, May 3, 2015 at 7:26 PM, steve shumaker <shumaker at att.net<mailto: shumaker at att.net>> wrote: There is a Yahoo group named "ET3400" that has manuals, schematics, projects etc. posted in the files section Steve On 5/3/2015 1:46 PM, drlegendre . wrote: (Still in SBC mode..) I'm feeling a need for one of the Heathkit ETA-3400 memory& I/O expansion units for my ET-3400.. or at least a set of documentation such as could be used to build one of my own. Anybody have an ETA-3400 they'd be willing to part with..? A set of docs in PDF? As it sits, all I've got here is a copy of the ET-3400 'Modification Manual' which details the changes which must be made to the ET so it will connect to the ETA module. Thanks for any assistance..

On May 4, 2015, at 2:14 AM, drlegendre . <drlegendre at gmail.com<mailto: drlegendre at gmail.com>> wrote: But the dang schematics are missing from the hardware manual.. does anyone have a scan? Oops, sorry. The schematics are there on the Yahoo group, but I failed to grab them before. Now rectified: https://dl.dropboxusercontent.com/u/391444/Vintage/heathkit/et-3400/yahoo-g… -Paul