2 Aug
2020
2 Aug
'20
8:51 p.m.
Yes, the H777, not the H7140. I've repaired about six of them now.
In each case the problem was electrolytic capacitors. The row of
four 180uF capacitors on the +20V regulator board have been the most
problematic.
-Dave
On 8/2/20 5:37 AM, Rob Jarratt wrote:
Actually I just noticed you said you have repaired the
BA11-L. From what I see that is the H777 PSU. I have a broken one of those too, but I have
never actually looked at it. I want to have a go at that myself first, but any
tips/information would be useful.
Thanks
Rob
--
Dave McGuire, AK4HZ
New Kensington, PA
-----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