| 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? |
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