Blaupunkt VCR backup battery problem
 

VCR Blaupunkt model RTV465, mechanics and electronics are Philips
Turbo Drive chassis.
Recently it was unplugged, then plugged back after a while. It lost
all its memory in the process, clock and stations - and something
else. (Usually, when unplugged it didn't lose the clock). Clock and
stations can be reprogrammed, but half the functions no longer
operate. I mean it no longer can be put in low-consumption mode,
VPS/PDC, LP, and many other features it had before are now ignored by
the machine. The corresponding button on the remote does nothing. It
also jumps over E2 (scart 2) input so it can't be selected anymore.
Plays and records fine, but picture in still mode or ff/rew shows
noise bars while before it had a clean picture (it isn't using the LP
heads).
It seems some option configuration has been lost, for this reason I'm
looking for these hidden options.
As I mentioned the chassis is a Philips Turbo drive deck and
electronics are also the same chassis. I'm looking for some jumper
inside to bring these hidden options but find nothing. I tried to
press Stop on the remote and Play on the VCR but that does nothing.
Does anyone know how these options can be found? I tried a good backup
battery but the VCR is already misconfigured.
I'm sure someone around here has available literature about these
Philips chassis.
Hoping to hear from someone...