开云体育

The main function of these washers and springs may be electrical, rather than mechanical: to ensure that the VOLTS/DIV shaft and knob aluminum core are kept grounded at all times. There should be a

You are right, I am a donkey… Not only works, but quite well, even if it reaches only 500 MHz (-3 dB), but probably it should be calibrated.

It sounds like you're describing knobs that go on a 400-series scope (465, 465b, etc.). The 7A18 is a plugin for a 7000-series scope where the numbers are printed on the front plate and the knobs are

Bonjour à tous! Just received a 7904A, little used in decades. So far fine CRT, all works but scratchy CRT controls and a few switches. Will CLA them. Seeking advice and tips on typical weak

I worked for a while at a vintage sound equipment boutique, and can attest that weed leaves a very nasty residue. Spray cleaners containing ammonia are best, and are very effective in getting rid of

I do know that pot makes a mess of tape transports..leaves a sticky mess everywhere so that vape stuff cannot be much better.....I found out after a friend passed and I was gifted some tape

I retired years ago, used to repair Tek and HP stuff. Back then I might have had the parts you need, but that was then. If you have to cement the part, I think it was a gray knob with a clear skirt

Thanks, I did have that in mind. I don't think I have anything to worry about with my 555. It came from an estate sale and stunk so bad I had to keep it outside for a month. No question as to why the

My DSA602A shut off by itself and clicks with power light flashes / will not start. If I disconnect A24 from power the DSA shows signs of life and appears to boot normally. Before I go doing

With the standard 7603 type vented plastic cover over the heat sink, I estimate the case of the hottest TO-3 transistor (center top) reaches about 75 deg C rise over ambient, or about 115 C with 40 C

Touch Def Wfm in the top right corner of the display and select compartment (L, C or R). /H?kan

The springs/washers don't press against the front panel but against the front the frame. The springs resemble the type where a plugin's board connects to other boards via pins/sockets and the spring

Be careful with what ever you use as it will transfer to or interact with the instrument (e.g. paint, trim bits, knobs, etc.) that you are covering.

Reminds me of my A?C cover. I always heat it up in the direct sun before trying to put it on or fold it up. Helps some.

I would guess that someone added the springs to secure the front panel. I think that option 6 does not have any nuts to hold the panel firmly. With all of the knobs removed, does the front panel

Hi, I tried to use a 7000 vertical amp (a 7A19). In the 11302 it works perfectly, in the 11403, I could not make it run, because I could not enable the trace, not having the plug-in button. Today I

Renaud, The 50V supply should be within ,25V, 49,75 to 50,25V. The 475A schematic has more voltages listed at points in the power supply. Pins 2 and 3 of the IC should be 9V. Pin 1 should be 10,4V.

Definitely fascinating, Ed! It would be great to see some picture of the process, should you have some; or, at least, the final product. If not, most of us would have to use our own imagination, which

A quick go - NO go testing of the high voltage sections would be to run the back of your hand near front of the tube. Of the hairs on the back of your hand stand up due to the static then you can

I recently purchased a 7A18 with Option 6. For cleaning purposes, I removed the knobs and faceplate. When I removed the VOLTS/DIV knobs, each had a washer against the frame with a spring which