There's quite a bit of confusion around about the capacitor problems on the TDS500, TDS600, and TDS700 series of scopes.
The scopes that had all those leaky caps on the acquisition board are:
TDS500 (non suffixed) and TDS500A. The TDS500B scopes did not have this problem as they went to all ceramic and Tantalum types. TDS6XX (non suffixed) and TDS6XXA.
None of the TDS700 scopes had the problem. They also used ceramic and Tantalum types on the acquisition board, except the TDS784D, TDS794D and TDS754D with serial prefix B04XXXX and up. I've never seen those leak, though.
