Can someone explain what is commonly meant by tv power supply
in traditional crt tv's of the 90's erz. What voltages are we talking
about, what are the tell-tell signs to locate it on the chasis?
Are there any other power supplies?

z ha escrito:

Can someone explain what is commonly meant by tv power supply
in traditional crt tv's of the 90's erz. What voltages are we talking
about, what are the tell-tell signs to locate it on the chasis?
Are there any other power supplies?

.....usually located where the mains supply meets the tv's main board.
generally has, amongst other components, a large (400v or so rated)
capacitor, a large-ish transistor (3 legs) or stk/str regulator (5 or
more legs) on a metal heatsink and a small ish transformer (often just
like a 1.5" by 2" rectangle of moulded plastic).
Typical outputs hard to generalise, usually have at least 3:a 95-130v,
a 5-8v, one 26v or so...depends on the tv.
PS is often marked off on the board by a printed line around it as
being 'mains live area' or simlar.
hope this clumsy desctiption helps. for photos, look here , clic the
photo and see the top right part of the board
http://www.schemetv.ro/?p=productsMore&iProduct=33

regards, -B,