Q703 is a 2SC2482... I got 5 of them for $6 delivered through a 'Best Offer' on ebay.
http://www.ebay.com/itm/2SC2482-Toshiba-Transistor-LOT-OF-5-PIECES-/161048194023?pt=LH_DefaultDomain_0&hash=item257f386be7#ht_1239wt_987I capped this monitor about 2 years ago but it was an 'In House' kit and not complete.
Along with Q703 I changed...
R120 in the PS.. it was open.
R727... the resistor color bands were pretty much completely burned off...
C729... 10UF/50V Bi-Polar cap that was not changed the first time around.
C734... also not changed the first time around.
I guess one or more or all of these parts stopped the HOT failures...Since they were all changed at once I can't narrow the problem down any further.
On a side note... the RFI touching Q703 does not happen with the monitor re-installed int the cabinet.
Hope this helps man...PEACE.