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Hi Morris: Thank you for the tips. Finally got my hands on a VTVM, but alas, the highest range is only 1500V. Checked some voltages and they're definitely wonky. Going to re-cap as much as I can to

Mark, The s/n of the piece will make a difference. If below 60000, it is likely the tunnel diodes on page <3> are bad. I have had this problem before. These going bad will cause your problem from

I have had a few minor problems lately, but it is usually back working in a few minutes or hours. Jeff -- Jeffeelcr

It was down with 503 errors Has been back since around 7 pm BST (GMT+1)

Is anyone else having issues with TekWiki today? I attempted to look up an instrument, but received a message stating that a login is required. I don’t have an account, so I can’t access anything

Team, I have over the past few months acquired 5 7844 scopes, none of which worked. Good thing it was just the cost of picking them up. I have repaired 3 of them so far, one of them still has the

Oops 7pm BST (GMT+1) so shortly after your message appeared here, it was back up ok

Wiki was down Back up by around 7pm... It took me on a journey checking that the hosting wasn't being DOGEd. ?

Anyone have a manual for the 1424? Wiki Down? Sam

Hey Bobert(?), I guess you have to go back to basics. Since the scope worked before you touched the A5 board, most likely you broke something while you were in there. It happens. What's the story of

Appreciate concern - I am actually using a high-voltage resistor rated for 10KV, which I happened to have available. It's a few inches long to prevent arcing. But the load is too high to measure

You can use a

3 cables A5 to A1 2 cables A5 to FP 1 cable A5 to PSU All connected

I hate those when they are used as transistor sockets ! The lead dress is slightly different to that used in most transistor testers, so when I pull a x'istor to test, I need to spread the leads

<https://www.mill-max.com/products/new/zero-profile-press-fit-receptacles> Cheers, David

One quick bit: Don't use that 10meg resistor (or any other ordinary resistor) again for HV measurement.?A typical voltage rating for a half-watt resistor is just a few hundred volts, above which HV

My lovely 465 died immediately after I finished some cosmetic repairs. Low voltage test points all look good. No beam, except when I disconnect the ground lead of the HV multiplier as suggested by

The AS15 suffix is not necessary. This suffix means the lamps have been burned in and tested for current for series circuits. Use the one that is physically the same as the original. Replace the three

[email protected]> wrote: This sounds like either the MPU is not running, or else it's not communicating with the front panel (FP). Did you reconnect both ribbon cables from the A5 board to the

Found several at Mouser that I don't know which to order The specs look the same and Mouser couldn't tell me the difference CM7152 CM7153AS15 The first one is 30% cheaper.. Thoughts?