Barry Watzman wrote in
:

No, you need an exact replacement inverter, specific not so much to the
LCD panel as to the monitor or laptop into which the panel is being
installed.

Agreed. I've rarely worked on those but they are made on custom boards to
fit VERY exacting and confined spaces. Trying to bypass going direct to the
maker's supplies will cost more (in time, effort, plus cash) than paying
what they ask. So much so that this might be why they charge so much. They
know damn well they can get that money. And they might not cost that much
anyway, they can't fleece a repair person quite as closely and ruthlessly
as they can fleece a member of the public who doesn't know that a £90 PSU
is really worth £30 or less.

Look at the firm's product line though. To save money they might use the
same custom board in many machines. You might find a low-end version cheap,
and save money if you don't want a regular supply of bits. Still worth just
paying up front though, unless you've got the time and attention of a
repairer of laptops and such.