It is the BA11-A, the power supply is the H7140 PSU. It is very heavy and extremely
complicated (for me anyway). The problem occurred on the Bias and Interface board, but
there could be problems elsewhere. When I first got it the machine ran but then just
powered down. There was a fault on the B&I board which I repaired, but I must have
done something wrong as then there was a bit of a bang. I have since repaired it further
but the timer on the B&I board never runs at the required frequency (if I remember
correctly).
I have sat on this for so long that I think my only hope is really to get someone more
knowledgeable than me to look at it. I should perhaps have another look before considering
shipping it across the pond, but if you really think you have the time and inclination, I
would certainly consider sending it to you.
Thanks
Rob
-----Original Message-----
From: owner-hecnet at Update.UU.SE <owner-hecnet at Update.UU.SE> On Behalf
Of Dave McGuire
Sent: 02 August 2020 01:01
To: hecnet at Update.UU.SE
Subject: Re: [HECnet] Hello from New Zealand
On 8/1/20 6:56 PM, Rob Jarratt wrote:
I have an 11/24 as well, but the PSU broke on it
and I don't have the expertise
to fix this one as it is quite complex, despite
all the schematics being available.
Is your 11/24 in the BA11-L (5.25") or BA11-A (10.5") chassis? If the
former,
I've repaired a number of those power supplies and have had very good luck
with them. I'd be willing to take a crack at yours.
You'd have to ship it over here, though.
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA