Instructables
Picture of FIX A BROKEN DTV CONVERTER BOX(APEX)
if you box does not respond or light is blinking, you have a power problem.
you need to replace a single capacitor on power supply board.
you will need :
a Philips #2 screw driver
a soldering gun
basic soldering skills

 
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Step 1: Remove cover and supply board

Picture of remove cover and supply board
you will need to remove all screws (7-8) from the box cover.

Step 2: Idntify power supply board

Picture of idntify power supply board
you will need to replace the capacitor marked with an arrow.
you can use a higher voltage rating caps and up to 100UF higher.

disconnect all cables  and remove the 2 screws holding the board.

Step 3: Photo pdf

print this pdf if need the photos
bill34 years ago

This fix worked great my box was a apex 502 but the fix was still the same

lauliu bill33 years ago
i have a bad apex 502 too, when i opened the box it has many capacitors, 2 -22muF400V(c1,c2 ) in big transformer upstream side and 4-470muF25v (c8,c9,c12,c15) in downstream side. How can i tell which of these capacitors is bad, or should i replace them all, Thanks,
ariemaayan (author)  lauliu3 years ago
hi,
you have a couple of ways to try and locate a bad capacitor without using special tools: 1- look for a deformed top where the X lines are cut, if the top is puffed a little, the caps might be bad. 2- when you power the board a bad caps will be dead cold or really hot to the touch.
caps are pretty cheap to replace and can be ordered online from digikey or go to a radio shake store. even if you replace all of them you are still ahead of the game.

Cheers
Arie
Hi,

My capacitor is a 470uf25V. The 25V stands for 25 volts? is that correct.

I can readily find a 470uf35V at my local radio shack. Can I use this higher voltage unit?

keep in mind my converter is already broken so I am not afraid to take a little chance, and if it blows out again I will not take this as bad advice.

thanks
Richard

ariemaayan (author)  rwjr59832 years ago
not such a good idea, you might cause the next component to fail when the capacitor discharges. try using a higher uf rating if you have to compromise .
if all else fail go ahead and use the one you got, hopefully you will not see an issue.
good luck
yes it works i have fixed a hdtv stb tevion tev8200 and a sd stb tevion md29000 model and both work !!! i got the capacitor parts from old not working dvd player and old pc power supply for pc . i had to change more thane one capacitor in each stb ,just change them if thy look bulged , and the same voltage capacitors too be safe ,my capacitor where a little smaller size but the same voltage so it still works and i put pc fans in both stb boxes too cool them thy get hot !!!!!ps : i need a remote control for tevion sd stb tev8200 to control the stb
sorry not the tev8200 i ment the -sd stb md29000 not hdtv just SD STB I DONT HAVE A remote control FOR SD stb md29000 THANK YOU