Brand : Amstrad 26”
Model : T2712
Roberto Salerno
Schematic : not found When switched on at main I had an indication of brightness; then nothing but the standby led flashing in continuation. Obviously there is no audio.
These Amstrad
power supplies are well known to
easily "give up" after some
time.
After removing
the protection cover I see that the power supply is a AUO type, a typical instrument adapt for
power supply on AUO Optronic LCD panels.
I immediately
notice a swelling on the CAP C355 (1000 F-25V-105°).
I dislodge the
Power Supply from it's seat removing
the four screws and connectors attached to it.
I replace the CAP with a higher
operating tension one, precisely
105°C.
On these
power supplys it is always advisable to
check the weldings on the various
connectors, I fresh solder any suspicious ones...…
I also replace without delay any suspicious
CAPS.
I reassemble
all and give power to the unit,
after a few seconds of flashing
the front led (preliminary bootup phase ) switches on as usual.
If it is
necessary to replace the power supply
on these Amstrad LCD
instruments you must choose one
with the correct tension, in
particular those going to the
panel.
So if we have a AUO panel we must use a AUO Power Supply and if we have a LG
panel, we must use a LG power supply
etc...etc....
Visually, these power supplys are very similar but it is dangerous to substitute them. In particular , if a LG
type power supply is inserted on a
AUO panel , we seriously risk damaging the panel in
a irreparable way. After keeping it on
trial basis I had the unit restored to full operation. 
