DIYbanter - View Single Post

JC[_6_]

On 9/27/2015 9:19 PM, wrote:
On Sunday, September 27, 2015 at 2:54:24 PM UTC-5, JC wrote:
On 9/27/2015 11:58 AM, wrote:
Thanks, that might come in handy.

Looks like I have to RTFM even with what I got. This thing shut down with a slip of the probe and now appears to need to be reset. There doesn't seem to be any bad components but there is no drive to the power supply choppers. I am going to make surer of that later today I think. It is difficult to access anything to test so I'll do hat I usually do - stick a wire on it and slide the card back in.

The way this thing is put together I can't even find the main transformer ! I pretty much know where it is but can't see hide nor hair of it.

This is another one where I look at how it is built and go "Why ?". They got the choppers on a standup car, the transformer on the motherboard and the rectifiers on another standup card. The logical assumption is they intended for service to be able to be performed on a modular level. All fine and good, but a part of me goes "Are you kidding ?".

I can't bitch. I couldn't design the thing at all. But I can go "Huh ?".

Anyway, thanks. And if you catch wind of any "reset" routine for HP stuff let me know. I am going to triple check that there are no blown components, like fuzibes n ****.

There is a lot of info on the 3561A on the Yahoo HP-Agilent_equipment
group including a PSU schematic in the files section. You might want to
sign up with them. A quick read through and there's a lot about flyback
burnup but I'm not familiar with the unit. I can send the PSU schematic
if your email address is valid, size 3MB

I would GREATLY appreciate the PSU print. It is JURB six zero zero six at gmail dot com. (numbers are numerals) That would be great so I can see what I have to do to get at least back to where I started. I am starting to think it needs some sort of software reset but that might not be true. No way to tell.

emailed it to you, let me know if you don't receive.