🚀 go-pugleaf

On Thursday, 09-Dec-99 around 08:13:26, Tim Jackson wrote, saying something about Serial port problems. My Reply is thus:

Hello Tim,

TJ> The other day a house about 50m away had a direct lightning strike to
TJ> it. This caused an induced surge on the nearby telephone system and
TJ> unfortunately this hit my modem line.
TJ> 
TJ> As a result, the modem connected to the line got fried. The PC connected
TJ> to the modem died. My Amiga, connected to the PC via a null modem cable
TJ> seems to be OK *except* that the serial port appears to be dead - I've
TJ> tried it with a modem borrowed from a friend (which works) and I can't
TJ> persuade it to do anything at all so I'm fairly sure that it is dead.
TJ> 
TJ> I've had a look inside and there's no obvious visible damage (unlike in
TJ> the modem where capacitors literally exploded) so I'm guessing the
TJ> serial chip has gone. Presumably (since it's all SMD) there's not much I
TJ> can do?
TJ> 
TJ> Assuming there isn't, does anyone know by any chance of anywhere that
TJ> repairs Amigas around the Cardiff, UK area?  Failing that I'll have to
TJ> send it off for repair to Analogic or someone similar.

Sounds to me like it might be one of the CIA chips got fried. Does the
printer not work as well? You don't say what type of Amiga you are using but
it doesn't really matter. All Amiga's use the same CIA chips (well maybe not
the A4000T). There are two chips, an ODD CIA and an EVEN CIA and they should
be marked on the motherboard silk screen. Try swapping them and if your
mouse stops working but the modem starts working it is a blown CIA chip.

Till next time...

-- 
Kevin Sherman
Email: BlitterEnd@yahoo.com
* Member Team AMIGA *
Amiga, nothing but the best A500, A3000