I tried to figure out which section this belonged in, but imaging is the one that seemed closest. I have a tektronix 5103n(D11) and the horizontal line is always slowly creaping down. Even if I have it probing a voltage. I tried probing a 9V battery and it would show 9V at first then very slowly keep moving down. Is there an adjustment I can make or is the scope in need of reapir? Thank you.
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I just acquired this portable aircon, history unknown. Its behaviour is quite strange:
- When turned on and placed into cooling mode, the upper fan (cold air out) just spins slowly. The compressor and lower fan do not run.
- If the device is then placed into heating mode and then back into cooling mode, the lower fan and compressor kick in and start cooling, but the upper fan still only spins slowly.
- If the device is placed into fan-only mode, the upper fan does not respond to low/medium/high speed toggles - just keeps running slowly.
- Display and buttons all behave normally aside from the
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Hello.
I have jut got my first analogue oscilloscope. An Isotech 620 20MHz.
I want to learn how not to damage it, and I found instructions on the internet obscure.
They talk about ground, earth, floating ground, this, that....
But they don't actually say anything anything useful so far.
I want to know:
Don't connect exactly this to exactly there or it blows up.
For example, I am tracing a signal from a function generator in an audio amp, or testing for voltages in different parts of a circuit.
I want to know what not to connect... -
I have recently acquired a Dynamco D7100 analogue oscilloscope without a user manual. As this is the first time I have owned or used an oscilloscope I would like to try and find an instruction book. The manufacturers no longer hold any information and a Google search only found one site but when I downloaded a 'service manual' all I got was gobbledegook. Any help would be gratefully appreciated or even pointers to a generic manual where I could learn more. -
Hi all
I added a Noctua fan to this dual NIC system at the DC jack, but this of course meant the fan was always on. I was probing for a 12V RUN point and my hand slipped. Now there are two problems - (1) the NIC closest to the power jack is now completely dead, no LEDs and not detected in device manager, and (2) the system is in a constant state of powered on - if the system is shut down it just turns on again a few seconds later. Apart from this the system and the second NIC are still working fine.
I've added a red arrow to where I was probing when my hand slipped, and... -
All,
Some of you have helped me in the past and I am very appreciative of all the help! (I have fixed TVs/Stereos/ and other small appliances with your efforts...Thanks so much!!!
Today I went to a local HAM Radio Festival. It was one of the smaller ones in our area. My stepfather is the HAM operator. I tinker in electronics but am a Software Programmer (27 years now).
I was looking for a few odds and ends for some electronics work I have to do for the household/farm. Typically these type of shows have the grab bags or a electronics vendor...
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