Hello there,
I have the same Mitsubishi Black Diamond 28" TV described above (Model BD28S).
I too had the same problem with the vertical sides curving inwards.
However, a day after this happened, the TV then refused to switch on altogether - instead I get a high pitched squeaking noise pulsing on and off when I try to switch on.
Any help would be much appreciated.
Thankyou.

Paul, January 2009

http://www.e-repair.co.uk/tips.htm
Mitsubishi TV Model: BD28S (11AK19 Chassis)
Narrow E/W Pic
C630 o/c
(Anonymous)

http://www.euras.com/repair_tips_1/BLACKDIAMOND/BD28S/BD28S_BLACKDIAMOND.htm

http://www.tv.quuq.org/index.php?pid=37
tips at top

ALL MITSUBISHI SETS WITH FLYBACK LINES /VARYING CONTRAST OR BRILLIANCE CHECK CRT BASE PINS FOR DRY JOINTS FIRST.
ALL MITSUBISHI SETS- DRY JOINTS ARE VERY COMMON ALMOST EVERYWHERE
ALL MITSUBISHI SETS -DRIED OUT ELECTROLYTIC CAPACITORS ARE COMMON EVERYWHERE

BD28S SEE VESTEL 11AK19 CHASSIS FAULTS
BD28S NARROW PICTURE POOR E-W - CAPACITOR C630 WAS FOUND TO BE OPEN CIRCUIT.

(Anonymous), May 2009