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flat5 · 03-18-2005, 05:48 PM

Stay away from the CRT high voltage line. It's the thick insulation wire with the
rubber cap at the end. The CRT will hold 26000 volts for many months if dry.

What you are first looking for are heavy components mounted to the circuit board
by the leads. No screws. These will loosen in time. Also, check components that will get very hot. These connections to the pc board may go bad in time. Train your eyes to see a round thin "line" around the pc "pad" (where a component is soldered to the board).

If you have to deal with the high voltage section (where that wire with the rubber cap
goes) you can discharge the CRT with a long screwdriver. Attach a clip lead to the screwdriver and the other end to the high voltage cage (metal) or to chassis ground.
Then stick the end of the screwdriver under the rubber cap and into the whole in the CRT that the wire fastens to. Keep it there for a few minutes. One quick poke will not discharge the CRT. The charge will return! but less so.

Important! When doing this discharging routine, USE ONE HAND only. Keep the other hand in a pocket or somehow away from any conducting surface or TV componants.

If this does not make sense to you, forget the project :-) IMO

Good luck.

03-18-2005, 05:48 PM	#9 (permalink)
flat5 Very Insignificant Pawn Location: Amsterdam, NL	Stay away from the CRT high voltage line. It's the thick insulation wire with the rubber cap at the end. The CRT will hold 26000 volts for many months if dry. What you are first looking for are heavy components mounted to the circuit board by the leads. No screws. These will loosen in time. Also, check components that will get very hot. These connections to the pc board may go bad in time. Train your eyes to see a round thin "line" around the pc "pad" (where a component is soldered to the board). If you have to deal with the high voltage section (where that wire with the rubber cap goes) you can discharge the CRT with a long screwdriver. Attach a clip lead to the screwdriver and the other end to the high voltage cage (metal) or to chassis ground. Then stick the end of the screwdriver under the rubber cap and into the whole in the CRT that the wire fastens to. Keep it there for a few minutes. One quick poke will not discharge the CRT. The charge will return! but less so. Important! When doing this discharging routine, USE ONE HAND only. Keep the other hand in a pocket or somehow away from any conducting surface or TV componants. If this does not make sense to you, forget the project :-) IMO Good luck. Last edited by flat5; 03-18-2005 at 06:01 PM..