Some time ago I bought a P6042 for 90 euro. At my request the seller first send me pictures to show that there was nearly no noise in the highest sensitivity settings. Fine noise-free traces indeed,

Firstly, I wouldn't call everyone making an operating error a complete idiot. Secondly, not everyone is immediately aware that trigger source selection allows each of the four channels as trigger

Hi, First you must execute the Initialize Button in the Utility Menu. After that you can see in the Utitility Menu the Color Button. Executing this will give you the Color Menu and on the right

$30 for a power supply? You can get them for half that. Yea it's crazy. To see financial cost of injury quoted like that is strange to me. ST [TekScopes] <TekScopes@...> wrote:

Usually PC power supplies fail because of worn out aluminum electrolytic capacitors which are easy enough to replace. In my opinion they are routinely under specified as older power supplies lasted

My father has some stories and photographs from his time at LRL. One of a Tektronix 500 series oscilloscope shows time running backwards because the magnetic field from the experiment pulled the

I'm amazed that a PCs SMPS can sell for as little as $30. That is just astounding to me. It means it cost less than $15 in parts, labor, testing, and hopefully UL certification (I'm not so sure they

Exploding is not technically a failure in a safety capacitor; the requirements are that they not sustain a flame and in the case line to ground capacitor, they must fail open. I have read that the

I use the Linear Technology DC1747A-A for isolated RS232. It's very nice, but makes some minimal noise, so if you need it really quiet with no Y capacitors you are probably better off

Speaking of X2 caps, so far I've only seen "Rifa" branded (Evox Rifa?) capacitors blow up. Oddly enough virtually all the 1980s equipment I've seen Rifa branded capacitors - I don't recall seeing any

USB based test instrumentation bothers me for this very reason. The continuous shield and signal ground connect all of the peripherals together through any hubs and the PC risking everything. I have

The specifications say <= 4 nanoseconds. 5 nanoseconds is 200 MHz so how much faster should it go? The circuit built around U150A is the fast period generator. I would check the values of the

I would use the 250 MHz or 500 MHz x10 readout Texas probes available on Ebay for about $45 or $75 each. HP/Agilent/Keysight and some other manufacturers use them also. The 250 MHz probes work fine

I did not go through your list in detail; I just showed some examples. I would leave the high voltage capacitors alone. I have never heard of them failing in a 22xx oscilloscope. An Armature Radio

My experience with commercial and ham transmitters gave me the knowledge to safely work with high voltage. I ended up at a battery company where the big systems ran with a 1000 volt DC bus with a

It took a lot of 500-series scopes back in 1964 to bring us the first TV pictures of the lunar surface - see how many you can spot: https://www.youtube.com/watch?v=YL9ObreaOE8 And note all

Hello-- I went to work for a computer company which had a need for isolated AC-switching controls, and as a newly-hired E.E. I was completely unfamiliar with the abilities of the engineering techs. I

Thanks for the clarification and will fix the list. Do you think replacing the 3 High voltage caps too ?? I completely forgot about the X & Y caps will have them and add them to the list.. Does anyone

While the parts list specifies capacitors as electrolytic with the notation "ELCTLT", that applies to *all* electrolytic capacitors including C374 which is actually a 150D series hermetically

(Catching up on old mail...) The actual truth is that the scope triggers just fine from all four channels with the two missing chips as shown in the EEVBlog thread. Obviously that's the first