Electronics > Repair

Oscilloscope is in a boot lock

<< < (3/4) > >>

LoveLaika:
Power supply board looks functional, and testing whatever test point voltages I could reach on the processor board, some of the ICs are powered with 3.1 to 3.6 volts. Getting values like that, it seems that the voltages are correct. I don't know what else to look for.

cncjerry:
On a lot of tek scopes you can measure the power supply voltages on the BNC input connectors.  If the voltages come up too slowly, you can get a loop.  I have a TDS3054C that does the same thing but after a while it will come up.  It's a power supply problem in my case.

You need to hang a meter on the voltages and see if any are coming up slowly, at least that was the issue with mine.

Jerry

LoveLaika:
Thanks for replying, but I'm lost. How do you measure power supply voltages on the BNC input connectors? You can't simply connect a cable from the bad oscilloscope to another to measure the voltage, can you?

Also, when you say hang a meter, are you talking about a clamp multimeter, hang it over the power cord?

BI3RZF:
firmware

BI3RZF:
   firmware

Navigation

[0] Message Index

[#] Next page

[*] Previous page

There was an error while thanking
Thanking...
Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod