"Michael A. Terrell" wrote in message
m...

Jamie wrote:

David O'Dell wrote:

Hey all,

Thanks in advance for any help on this. I'm a high school physics
teacher and I came across this device in a surplus warehouse and I'm
hoping to get it working if possible. It is a wavetek brand waveform
generator model 75.

the device turns on but the LED display panel is all black blocks and
no digits. I've read the manual and tried the reset procedure of
hitting setup 3 times, then f2 and then f3 but there is no response
even during this process. I have measured the signal from all of the
outputs and no response.. I really hope this is a common problem and
is fixable, this would be a very meaningful device for my students in
our classroom.



has anyone had experience with this problem on this or a similar device
before?

thanks!
There don't seem to be a service manual up front, I didn't fully look


You didn't look at all. The first hit on Google provides the
manual:

http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&v ed=0CDAQFjAA&url=ftp%3A%2F%2Fftp.rowland.org%2Fpub %2FEE-Lab%2FManuals%2FWavetek%2F75%2F75_man.pdf&ei=mk6tU a-1D-PG0gH7j4DAAQ&usg=AFQjCNHdCoJ9IroYOycz0NhZm0mfz2lmG w&sig2=cGuZTADipaNmQQ3v82SRRw


Having had a look at the manual that Michael has kindly provided the link
to, my very first step would be to check the main supply rails (+/-15v and
5v page 133 and 80 of the pdf) for level and noise, replace the lithium
battery, followed by - if that doesn't restore it - examining the operation
of the reset circuitry for the micro - see pages 4-14,15,16 (pdf 75 ++) and
pdf page 120 for the schematic of that section

Good luck with it. It looks a decent bit of equipment, functionally at
least, and I'm sure that working, it would be a useful asset to your
department.

Arfa