"gary" wrote in message
...
My Fm4 has a strange problem, I have replaced the back up battery and this
is working, if I store a station at 88.10 mhz when I switch it back on the
frequency comes up at 88.00 mhz for the first 5 - 10 minutes, it then
slowly
creeps up to 88.5 then 88.10, it does this on all stations stored.

Does anyone have any ideas about this

Thanks
Gary

Remove the MPA480 custom chip from its socket and re-insert it. This
sometimes cures spurious or erratic performance.
Considering the age of the Tuner, the socket contacts are likely not as good
as they should be and the process of removing & re-inserting the chip will
clean up the contacts. Personally I would replace the socket with a new one.
If this doesn't fix it, you are likely up for a new IC - which are available
from Quad at about UKP26.00
I had a strange fault on my FM4 a while back which I put down to a faulty
battery - the Tuner wouldn't hold stations in memory. I changed the battery,
but the fault remained. Further investigation showed that the IC had
developed an internal leak and was allowing the battery to drain very
quickly so I replaced the IC and that fixed the problem..
n.b. once the battery voltage drops under 4v then the memory goes AWOL.