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You might try here: https://www.avdweb.nl/div/tektronix-465-parts Thanks, Barry - N4BUQ

Looks like I need a new 465B 20 Meg bandwidth limit switch if there is one available. So far, no luck. Neither Sphere nor Qservice have one. It is S1414, part number 260-1486-00. It has been stuck in

Tom, Harvey, This problem has threads running in parallel on eeVBlog and the UK Vintage Wireless Forum. On eeVBlog the generic component tester shows two back to back diodes, one with Vf ~ 700mV and

Dan I have 2 900 series that I do not thing I will have time to get to. I know they both have HV issues however the tubes seem to be good and they are complete units. Then are a 922 and a 912. Both

Use the Groups.io web interface, there are upload sections in the column on the left. Attachments are not enabled for this group.

can it be done on here as i cant see how to upload a pig with a reply.

Generally, the algorithm is to run each pin of the device through two resistors, one about 680 ohms, one about 470K.? Each of the ends of those resistors goes to a separate I/O pin.? Each device pin

Wouldn’t tell me much anyway! Need to know how it tests. Just try a 2n3904 or pn2222. Faster than trying to understand your tester! Tom Sent from my iThing, so please forgive brevity and typos

the tester is a atmega bases one from china,was going to attatch a pic but cant see how on here.

I can confirm that the attenuator does not to be swapped out. Tom Sent from my iThing, so please forgive brevity and typos

Dan, If I remember correctly, the knob and shaft are a single plastic part. The shaft can probably be just pulled out, and the whole knob/shaft piece replaced without changing the attenuator. --John

I have a 922. I believe that The knobs are missing, but the attenuators are still there. -- Michael Lynch Dardanelle, AR

Howdy, ? Anybody here got a Tektronix 920 or 922 scope that they would part out, or perhaps any of the 900 series scopes to the extent that they are compatible???? I am looking for the input

You got wrong person my call is KD0MUY and don’t have any boards. Sorry for mixup wrote:

What junction voltage does it report in that diode test, and at what current? A not uncommon failure mode is extremely high base resistance (on the way to becoming infinity, perhaps), so some

q386 tests as a back to back diode on my tester,does that sound right?,also can you recomend a sub to replace it with ?,tia m3vuv.

Q386 has an open BE junction if there's no typo in that line. 2.6V VBE = dead. Tom -- Prof. Thomas H. Lee Allen Ctr., Rm. 205 350 Jane Stanford Way Stanford University Stanford, CA 94305-4070

just tested q 376 out of circuit it says npn but only a beta of 13.

Heres what i measure in respect of ground q377 C=1.8v E=-2.1v B= -1.5v q387 C= 21v E= 9.4v B= 9.9v q376 C= -2.3v E= -5.6v B= -4.97v q386 C=9.5v E= -5.7v B= -3.1v

Repair complete! I ordered two: https://www.mouser.com/ProductDetail/594-MAL212516682E3 And finished reassembly of the plug-in after work yesterday. Ran through the check-out procedure in the manual,