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Frannk, I can speak about this topic from all the vantage points you mentioned. I am a consumer, I do like to repair some of my equipment (but not all), I have designed test equipment at HP, and I

Good Evening to the group!? ?First post but I've been reading a ton for a few weeks now. (I thought I posted this but I don't see it, so I'm reposting.. please delete if i did something dumb) I've

Congratulations Jinxie, your hard work and determination paid off. Your dual transistor construction looked great and will be an inspiration for others. I also enjoyed the challenge, no need for any

Thank you for the nice words Barry. I can assure you no computers were harmed during the debug :) I like the puzzle of hunting for the fault, especially on older HP and Tek equipment where there is

@jmr Thanks for the suggestion; I guess now - or nowish - would be optimal. If I can find the time tomorrow I shall do so (but it will definitely be under a new subject title as this thread has

I think group member Milan Vasic has some CLIP files (Component Level Information Packet) that contain schematics for various HP gear including the ESGD B variants of these signal generators. These

That assumes you have the time to reverse engineer the faulty product, at least to some degree.? These days I'm commuting about two and a half hours each day, so not having at least a schematic

I agree there Jim.? While I do agree with some legislation, I have not been too keen on what I've seen passed so far.? Manufacturers are already circumventing some of these laws passed in CA from

As usual, something between the ridiculous extremes would be the best situation.? Between say, manufacturers being forced by the government to divulge all their secrets and consumers forced to have

This entire group is only possible because HP/Agilent for a time used to provide schematics.? They still provide service manuals as far as I am aware.? That is all proponents of right to repair are

Nice try smart ass.? Where did I say share their manufacturing process?

Does the customer deserve information on how to repair an incandescent light bulb? Perhaps the customer should be given access to cheap replacement tungsten filaments? Or, if that isn't practical,

Razvan, Your points are valid, but my point is don't give the manufacturers the benefit of the doubt.? The customer deserves this information.? I apologize as I came off a bit strong with my

Hello, Thanks for the suggestions! Tom: I don't have a GPIB based floppy drive, but I believe the method only shifts the problem one step? Maybe I'm missing something? I have (I believe I have)

I've got three of the ESGD series sig gens here and so far, none of the backlights have failed. However, it is only a matter of time before each one fails. The oldest one is an ESGD4000A. This was an

Agreed. This was a good read and a great outcome. Well done to all involved! If it helps, I can suggest a few performance tests that may be relevant now. To test that the loop gain switch (at Q4A

Hello Frank, From your point of view maybe it is short-sighted but I encountered issues in the past where we had some Altera and Atmel ICs that was faulty including other passive components around

Had to laugh.? Chuck is so right about this.? As someone who managed an engineering team for a larger media company we were always dealing with legal intellectual property nonsense.? My all time

I have trouble convincing myself that Ozan isn't an advanced computer sent here from the 23rd century. He has an amazing wealth of knowledge and so willing to help with all sorts of trouble-shooting.

Well well, Gentlemen, that certainly is worth celebrating! You guys have restored one of the nicest classic spectrum analyzers ever to exist to working order!. Knowledge and persistence combined! The