[time-nuts] Cheap 5370A on eBay

Bob Camp kb8tq at n1k.org
Fri Dec 19 08:50:53 EST 2014


A *lot* of errors on the 5370’s (A or B) can be traced to a couple of fairly simple issues:

1) Connectors and sockets. Simple un-plug and plug back in may solve the problem (at least for a while). 

2) The power supply. The parts are pretty common, so it’s a fairly easy fix. 

3) Alignment. This takes a while, but these beasts do drift. 

No I’m not suggesting that you buy every single 5370 based on it being an “easy fix”. I would indeed check 1 and 2 above on any 5370 that comes in. There are things like ROM’s with known defects that die and are a bit more problematic to replace ( = get the replacement CPU board). 


> On Dec 18, 2014, at 6:10 PM, Orin Eman <orin.eman at gmail.com> wrote:
> #151518774079
> Currently at $49.95 plus shipping.
> It's showing a ROM error (7.7) on startup.  I asked what the error was this
> morning and they posted pictures this afternoon.  It could be a candidate
> for one of John Seamons' 5370 processor replacement boards assuming nothing
> else is wrong.
> I have the minimum bid in, but if anyone else wants it, go for it; I
> already have one.
> Orin.
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