How long do you think those poor machines cooked? I bet far, far longer than the soldering temperature spec. likes.
-- Will On Sun, Oct 11, 2020 at 10:06 PM dwight via cctalk <[email protected]> wrote: > > Most components can stand soldering temperatures. It is clear that it was > only hot enough to melt plastics. That isn't even hot enough to damage > boards. It is wasn't powered at the same time, it is unlikely to have been > harmed. I've seen cases where there were flames in the board area and parts > were not damaged. These were mostly wrapped in their cases. Melted plastics > most likely protected the boards from dangerous temperatures. > Dwight > > ________________________________ > From: cctalk <[email protected]> on behalf of jim stephens via > cctalk <[email protected]> > Sent: Sunday, October 11, 2020 6:49 PM > To: William Donzelli via cctalk <[email protected]> > Subject: Re: FIRE SALE! > > > > On 10/11/2020 6:34 PM, William Donzelli via cctalk wrote: > >> I suspect much of the electronics is fine. It would be good for someone > >> wanting backup cards. > > You must be joking. Those cards are done. Any chip that is still > > operational will likely fail upon or shortly after power is applied. > > > > -- > > Will > > > I agree. Especially the ones heated high enough for the melted plastic > or scorch damage. A radiative and convective heat soak is pretty damaging. > > Consider the flow temperature of the materials inside. Unless the fire > was flash fire, the entire thing would have been heated for some amount > of time (15 minutes minimum usually, to 45 minutes) due to response time > of the equipment. > > Not evident in the photos would be possible contamination from either > fire suppressant materials or water to extinguish the blaze. > > Like I said, Ethan is looking for a cabinet for an 11/70 stripped out of > such, and these probably are okay for that. Maybe some of the other > bits after inspectiong, but I'd not trust the boards up front. It would > be a project I'd want a solid shop of parts to do testing for every > board involved to certify they work. > > Most people I know have one system in their basement, lab or garage, and > I'd personally not want to put boards from a source like this into such, > unless i had nothing to lose. > > thanks > Jim
