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test_equipment:tds210_dead_backlight [2013/01/08 19:00]
test_equipment:tds210_dead_backlight [2013/01/08 19:00] (current)
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 +====== TDS210 Dead Backlight ======
 +
 +> I just acquired a TDS224 4 Channel 100MHz DSO that other than the 
 +> backlight being dead is otherwise perfect.
 +
 +> Does anyone have any details about the dimensions of the CCFL tube
 +> used in these scopes before I tear into it?
 +
 +> Also has anyone had any success opening the instrument without ​
 +> destroying the labels that you normally have to destroy?
 +
 +> Deane any parts?
 +
 +> Thanks to all,
 +
 +> Sam
 +> W3OHM
 +
 +
 +The most common fault with dead backlights on TDS200 was/is not the tube but a shorted cap in the high voltage supply to the tube.
 +
 +Often it also took other components with it. On the power supply board, check Q2, Q3 and C24 close to the AC input. ​
 +
 +What labels would that be ? To open the scope use a screwdriver,​ with the handle folded down, insert it between the handle and cover and carefully twist it so the handle comes out of cover (on both sides).
 +
 +When done unscrew the two torx screws that were behind the handle.
 +
 +With the scope up side down pull the stand and the cover will come off.
 +
 +/Håkan
  
 
test_equipment/tds210_dead_backlight.txt · Last modified: 2013/01/08 19:00 (external edit)
 
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