Hi all,

The clock in my Sime Friendly boiler seems to be dying. It stops after a
certain period of operation, giving a firm whack seems to start it for a
while again (I found this out by taking the cover off; when removed the
cover hit the surrounding casing which caused a bang and started the
timer!). Clearly this is not a satisfactory situation.

My first thought was just that a battery was going in it or something,
but reading this newsgroup suggests there's no such thing (no mention of
it) or at best just a backup battery. It could be that the last time the
boiler was serviced, a year and a half ago, the mains wasn't attached
back to the boiler properly, but that was a while ago and I doubt a
"backup" battery will go on that long.

Will I need to replace the entire clock unit?

Dan