Support
Looper's Delight
|
Support |
|
|
The change in the power supply has to do with the voltage regulators on the +5v section of the power supply (+5v for the digital section). Two 7805 voltage regulators (U40 and U28) are removed from the EDP, along with the heat sink that they are mounted on. The new regulator circuit replaces the 2 previous ones. The new circuit is put in the location of one of the previous regulators, and a jumper must be added to connect between pin 3 of the U40 and U28 locations (+5v output). One regulator replaces two, so the traces from the output of the (previous) two must be paralleled. It does run much cooler. I contacted Mike Ayers at Gibson, and he sent the part out pronto. Thanks Mike! He can be reached at cayers@gibson.com I would Not suggest you attempt this modification yourself unless you are completely comfortable with working on printed circuit board assemblies, that contain static sensitive components. You will have to figure out the proper orientation of the new circuit, and locate pin 3 (for the jumper) on your own (the part doesn't come with a rework procedure or diagram). Kim helped me answer some questions I had when I changed mine (thanks again, Kim). If you have the proper skills and tools, it is not difficult to dissasemble the EDP, desolder the old components, install the new component, and add a jumper wire. If you are not experienced with this type of work, leave it to Oberheim, or a good technician. Making a mistake while doing this rework could be destructive to the EDP. I will be glad to answer questions regarding this rework, but cannot _teach_ you how to do this via Email. bret ---KILLINFO@aol.com wrote: > > Kim recently posted about the new low-heat power supply. Does any one know how to obtain this or how you would upgrade to it. _________________________________________________________ DO YOU YAHOO!? Get your free @yahoo.com address at http://mail.yahoo.com