Handheld HPS10 doesn't display or detect incoming signal

Instruments Handheld Oscilloscopes
1

Hi,

I have had my HPS10 for about 10 months and at first it was working fine. Having put it down for a while I have come to realise it doesn’t seem to display signal anymore. Below is a list of symptoms and observations:

-Unit turns ON fine, display is working.
-Features for calibrating and adjusting display scales triggers etc work fine.
-Unit is set to ‘RUN’ and not on hold.
-Test signal shows <3mv deviations (basically just no signal)
-Using a DVM I can check that the probe connections are not broken its fine + and -.
-Followed trouble shooting guide checking scales and performing long reset.
-Fresh batteries checked.
-Run from DC supply, no change.
-Connecting a variety of non changing signals e.g. 5VDC, 9VDC… no signal change.

What might be the problem?
If it has been damaged/is damaged what might cause this to happen?
If there are no simple fixes how can I return the unit to Velleman for repair?

Many thanks for any help.

When it was working it was so handy I really want to get it up an running again.

Cheers,
Nick

2

Most likely, the input section is damaged due to an excess voltage.
You can return your unit for inspection/repair.

Please return it to:
Velleman Tech. Dept.
Legen Heirweg 33
9890 Gavere
Belgium

US: please call (817) 284 77 85 for RMA.

3

Thats great, thanks for replying, I thought as much although I don’t remember any specific over voltage incidents.

Could you give me some idea of the cost of returning the unit?

Many thanks again,

Nick

4

Hard to tell.
Can be warranty, if not, max. a couple of 10’s of euros, shipping and handling excl.
For US: call for details.