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I removed u460. (ca3102 from rca). it is broken (20ohm between 1 and 14 in both directions) also i found a diode connected on the top to pin 12. i couldn't detect pin 12 in the schematics... now start

Got one of these recently and need copies of the connection cards to test IC's....is there a member of this great group, who has scanned these and can make them available???? Thanks in advance Louis

Hi, Voltage U460 pin3 and 9 is -8.6V, R456 is ok. pin 1 and 8 are 3.5V not 2.2 pin 4 and 11 check out ok, 2 and 2.4V dependent on the slope setting. u460 is unfortunately not on a socket. To access

Would anyone with the secret code book know what comprises MOD WT on the 5440 mainframe? Would anyone with access to the 'secret code book' know what comprises "MOD WT" on the 5440 mainframe (circa

Rolynn Thank you so very much for that :) I will be in touch soon.

"/review would be with two guys notoriously chary about poor engineering detail execution ". That is probably /why hp, unlike Tektronix, did not have any overloaded/discolored resistors or

Hi Herbert Thanks, I had seen those numbers but I thought they would have a corresponding long part number like the one I see on Ebay and in the SV manual for other parts. I was looking through the

U460 is not necessarily bad but if it is, the CA3102 transistor array is not expensive or difficult to acquire. If U480 is bad, the 10102 ECL Quad 2-input NOR gate is readily available. 4 volts at

Do you have the sweep in "magnified" mode, by chance?

I think my biggest hurdle is going to be getting the proper Semi Rigid cables that are needed I have no clue where to buy these........ ===================================== Item number 280970372957

Hi David, no square wave on the pins 10 and 7, both slopes.... it just measures a +4V dc, at both pins. Does it mean my U460 has died? T.

Robert - You will need to make these semi-rigid cables. I cannot imagine being able to find the correct cables unless you get lucky. Making the cables is not as hard as you may think. You will need

Agreed, probably why they popped, undersized for the circuit. Sent on the TELUS Mobility network with BlackBerry

correct except not the wife...attorney. no fun. must not go out to scope, must not go out to scope...

You are way ahead of us on the rectifiers! But... I think your biggest problem today is going to be an angry wife if you don't quit playing with that fine 465B oscilloscope! tom jobe...

That's what I had to do, bend the leads to fit. It was tight but it worked :) Sent on the TELUS Mobility network with BlackBerry

i did bend and shave to size for the holes on rectifiers for a 465M fix. bigger is better when it comes to rectifiers.

The Tekscopes archive could have saved you a lot of work Brad. Your advice to go up on full wave bridge voltage rating is excellent! in my experience, the limiting factor on a replacement bridge is

i agree, all ps's are first check (except i just found a smoking tantalum). i have a few big rectifiers left over from a 465M fix. if they are a prob i'll be able to hit em pretty easily. i have not

trigger view did nothing. but i had it on long enough that i noticed a smoking tantalum. and it was even moaning! ikyn it was making noise when it started to smoke. it was in a cluster of 3 tants on