[Info-vax] rx2620 power supplies / VRM voltage low

[Scott Dorsey]

George Cornelius <cornelius at eisner.decus.org> wrote:
>
>Thanks for the response.  These are all great comments and
>help us focus a bit.  Yes, one of the electronics techs
>is the one who referred the original scsi issue to us
>after replacing array controller did not help.  He also
>helped with the purchase of the original replacement
>supply, from an "approved" vendor.  Lab supervisor thought
>he was buying new but after it eventually failed, I
>noticed corrosion on the case due to something having
>dripped onto it from above - no doubt electrolytics
>leaking from the supply above it! 

That is not a refurbed supply, that is a "junkyard" supply.  When you buy
junkyard parts, you get what you pay for.

>So we lined up a local vendor and he has been buying from
>them.  Their supplies are significantly less expensive
>than the first one he bought, and come with warranty,
>but are failing as well.  Looks like it's time for
>a long discussion with our suppliers.

Did you not ask them what they did when they "refurbed" them before you bought
them?  

Just take one of the supplies and have it worked over by a legitimate power 
supply tech.  These things are not rocket science.
--scott


-- 
"C'est un Nagra. C'est suisse, et tres, tres precis."