Emerson TV, Can't Figure out What Year This Is?

[bandersen]

You should be able to rotate the top half of the shield and push it down to expose the top of the tube.

[DaveWM]

if the shields are not the twist and push down type, but rather a single piece, then look for a hole near the bottom of the shield on the side. Insert a thin flat tool (I have a fibre glass rod just for this) between the tube bottom and the socket and give the tool a twist. this will lift of the tube by pressing the tube base off from the tube socket. FYI you should not have to check all the tubes, shrinking from the bottom is prob a power supply issue or more likely a bypass cap on the vert out tube.