drop-in replacement LCD displays for older Tektronix TDS scopes with CRTs

[zac]

I came across these drop-in replacement LCD display kits for older Tektronix TDS scopes for $350:

http://www.ebay.com/itm/NewScope-T1-LCD-display-kit-for-Tektronix-TDS-744A-754C-754D-544A-Oscilloscopes-/131823180063?hash=item1eb146191f:g:MfoAAOSwFnFWCMDc

http://www.simmconnlabs.com/2001/9001.html

I have a couple late 1990s vintage TDS620/754 scopes which are in good shape.  I'm trying to figure out if there is any way to determine if the battery in the battery backed sram modules are nearing depletion.  I got some replacement sram modules from an ebay vendor, but want to avoid de-soldering the original sram until the battery is nearing depletion. 

[bobcat1]

Grate Idea

I have one of this scop TDS684B and will consider this change

All the best

Bobi

[PM3295]

I have obtained a replacement for my old HP8753A VNA from this supplier last year. It looks great with the colors instead of just green.

[bobcat1]

Hi

The instruction for doing the replacement is only clear to someone who already familiar working on this instrument
whether they upload a movie they will sell lot more kit

all the best

Bobi