Re: If you had $1, 000 to buy a 100 MHz scope...
If you don't mind outsourcing the repair, let me recommend Jay Walling:
His display works perfectly in my TDS754D...and was cheap. The unit from Sir Xu is better, but costs much more...
With best regards
Tam HANNA (emailing on a keyboard-less handset, sorry for spelling mistakes and brevity)