10 Dec
2015
10 Dec
'15
8:19 p.m.
On Thu, Dec 10, 2015 at 2:44 PM, Robert Jarratt <robert.jarratt at ntlworld.com
wrote:
Having spent many hours fixing my own H7864, and finally succeeding, I am
interested to know what kind of failure you had. Filter caps often go on
these, are easily replaceable and don't stop it working. The recent fault I
am referring to was a failure of the main switching transistor on the
primary side, leading to total deadness, but replacing two parts brought it
back to life.
Rob,
Yeah, I'd actually really like to save this Micro 11's power supply but
I'm so bad at electronics that I feel hopeless trying. It'd be really
good, though, because I could then just neatly slide the micro into the big
cab when I feel like having it connected to all the other stuff, or keep it
in its little deskside cabinet for typical day-to-day stuff. It has to
stay very neat and presentable because these machines are actually part of
the decor of our den (and with my better half's enthusiastic approval,
which I realise is quite amazing of itself and don't want to blow)!
Did you keep notes on how you ascertained what to replace? Or can you
summarize in a step by step way that an amateur would be able to follow?
The whole of my electronics tooling consists of some soldering stuff and a
multimeter.
tia!
jake