Replacing capacitor from unworking TV with some other capatitors which has not the same value
If you combine capacitors in parallel, their value will add.  

(C1 + C2 = Ctotal)


2x 1000uF capacitors in parallel will be equal to a single 2000uF capacitor.


If you combine capacitors in series, their value will divide:

(1/C1 + 1/C2 = 1/Ctotal)


2x 1000uF capacitors in series will be equal to a single 500uF capacitor.


You should be able to replace the faulty capacitors with any that have:


The same (or higher) voltage rating
The same capacitance (with more knowledge of the circuit, it is possible that other values could be used)
The same polarity


Replacing these can be pretty dangerous (read: physical harm could definitely result) unless you know what you are doing, though.  Make sure to unplug the TV, and also discharge the capacitors before removal.