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Nope no sockets anywhere on this unit. I checked the u4269 and no luck. Good news is that it isn't loose;) TekScopes@...> wrote:

do you have any 6.2v zener diodes….or any spare npn 2n2222 2n3904….transistors….. you can make a zener out of a spare NPN transistor emitter to base junction…..the base should be

Sorry, misunderstood the original email. When I hit the beam finder (after working the button about 20 times) the beam grows from two divisions to three divisions. TekScopes@...> wrote:

back to the beam finder button a minute…..you said it just slightly shifts the display??? it should shrink it a good bit….. work this button in and out about 20 times…… any change?

Oh. Thanks for the education... On R4344 54.85 vdc 108.5vdc TekScopes@...> wrote:

locate u4269 a dual in line pkg right next to the 85,86,87,88 test points….if it’s in a socket wiggle it…..

there should be 6.2v difference across VR4341…. measure both sides of R4344…. on side should be 55v the other 103.8. the blackish coating on the leads is silver oxide, not burned

It just shifts the display slightly. Does in XY and in normal mode. TekScopes@...> wrote:

Interesting VR4341 has some blackened materials on each of the leads. Not sure if that is normal, but to the untrained eye, it looks like it might have been toasted. VR 4341 measurements Cathode

when you press the BEAM FINDER button ….does it have any effect on the display, if so what???

find vr4341, a zener diode. measure both sides of it please

Hi Jim. The symptoms do still exist when I press the 10x mag button. TekScopes@...> wrote:

one other thought…. push in the X10 mag button and see if your original symptoms still exist….. jim

Done. Here are the results TP VDC 85 3.1 86 3.18 87 -3.03 88 -2.81 89 36.33 90 36.11 TekScopes@...> wrote:

Hi Kevin, set up controls just as Albert suggested. gnd both channels, defocus, and low intensity. now measure the voltage at TP 85 and adjust the horizontal position on the front panel until you

OK. So I made the measurements on the test points as directed by Albert. I have not checked the transistors because I'm still not sure the best way to do so. I also checked the wires to the deflector

Hi group, I am hoping to get some guidance with the TDS700A Field adjustment software. So far I have taken the following steps: 1) Found an old PC with an ISA bus slot. 2) Run FDISK 3)

That's some nice pictures, but I can still see some benchtop surface, so a total fail on the Bob Pease challenge. ST <TekScopes@...> wrote:

I just added a fourth picture. Oversampling by 2x to 840 Hz, 6 usec gives a double exposure - it samples both sides of the bit during each revolution. One side says "Craftsman," and the other "USA."

I will be uploading some pictures of a wood router bit running no-load at about 25,200 RPM, directly sampled at full speed - 420 Hz, with 12 usec strobe width. I have a 7904 setup on it now, with