Or If you need a future second unit or parts unit...check out ....$5...:
http://cgi.ebay.com/LEADER-LBO-515-OSILLOSCOPE_W0QQitemZ140005292102QQcmdZViewItem
Apparently he....."h0tmlstud" in Arizona still has the unit. as well as....more importantly
a PDF file of its owners manual which you might ask him for an E-mail attachment.
73's de Edd
Thanks, I tried with no luck. I'm willing to pay if I can find one.
If you took note that site is still "under construction". In all probability of there being a time lag with the incorporation of older 0-scopes into the data base.
They do have a basic 20 Meg vert B/W model # LS-8022 which you can refer to/download and you will find all of the basic/rudimentary common useage of like switches and settings to be the same between units as to be able to fathom the like identical operation on your unit. The functions of controls/decade switches /adjustments are the same, with only the physical locations and appearances to be the difference.
You should be able to observe and master the fineties of triggering adjustments within one day of experimenting with your scope on different waveforms.
The more involved...and infrequent...some times never..
mastering of the sublieties of the incorporation of the hoz B delayed time base will take your reading of the instructions of the other LS-8050 scope PDF manual on that Leader site.
Lastly try directing an E-mail DIRECT to manual service at the above site and see if they might get/speed up a PDF on your '515A unit.
I will say that Leader manuals ...in general... are no HP's or Tek's in conciseness and coverage. But then, you probably need only the rudimentary basics.
73's de Edd