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2nd call... so far a couple bites but no takers. It would be a shame to have to scrap and recycle this system.

Bill, The big question is what resistance do you measure at the pins of the A2 board that have the white / Violet wires going to them with the wires removed. At this point you should read >1K Ohm at

Bill, I don't have half the knowledge some of the guys in this thread do on circuit analysis.? But have you done a visual inspection of the entire board yet?? Have you removed it from the unit to

As long as we're on this topic, what are some battery brands that peeps here would swear by? I used to stick to Duracells, but you're confirming what I've also seen - a ton load of leakages. I'm tired

At about 1.30am, the fan slid out enough to access the mosfet pins. A little tweaking and in next power up I see way more sane voltages on the transistors. 23.5v is gone. 1.5v to the driver base etc.

https://en.wikipedia.org/wiki/Burgess_Battery_Company

I spent a little time in a prep school with the people who became these destroyers.? What makes you think their parents were any different?? Where do you think they learned their "morals?"

I have had bad results as far as leakage with Duracells, but Ray O Vac has been far worse. Once they are 2 or 3 years old, there is a serious risk of them leaking in the package. Mallory Duracells

Same here; Duracells are "remove on sight" around here. I swore by them all my life, until they started destroying things. But that's ok, because...."it's just business". No. It's greedy scumbag

Everything you say is true. I worked at Mallory back when Duracell was their brand name for cells (Mallory also made other components like pots).? I worked in R&D on lithium sulfur dioxide primary

Hello All I have a hp 141t when it is powered up there is no trace but when I turn off the power the trace briefly appears in top right corner. Is it the blanking circuit or do I need to do an trace

Look at Duracell. Another suit problem. Prior to being bought by Proctor and Gamble, they had a very good product with a good reputation. Now the batteries leak in the packaging prior to installation

Re:? - Absolutely no proof but it is a simple theory for what I see happening to other people. Pretty crass IMO, as even with the old DOS based database (Informix SmartWare!) we used at the ex works

One thought... Do you have a reliable bench PSU? If so, you could temporally use it for the -12.6V rail, and see if the rest of the instrument power's up, with the internal regulator disabled and

Dear All, Let’s not get too carried away- Keysight has several T&M products that have the highest performance available from any company, worldwide- examples include the 110 GHz Lightwave Components

If the attenuator does turn out to be faulty and beyond repair and I can't find a replacement unit off Ebay or whatever, I could always just bypass the faulty attenuator internally, replace the top

gosh.. i said "as far as resistors" but i meant diodes.. general purpose diode replacements.. i need to proofread when i'm tired.. >

Intriguing, you may be onto something Chuck. I did find the pass trans socket is missing 1 side of the clip and making almost no contact. I squeezed the one remaining contact a little and i think made

Interesting: Max40200 (2x) as possible replacement for diode Or'ing in an Sram battery back-up circuit. Max40200 MAX40200EVKIT https://www.youtube.com/watch?v=otMKgwCxVyA

It has been 2 decades since I last had a 141T, so I don't recall too many of the details, but one thing I thought I would mention: If the power transistor in mention has a mica/silicone insulator