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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 |
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| | |
| | 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. |
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| | 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). |
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| | When done unscrew the two torx screws that were behind the handle. |
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| | With the scope up side down pull the stand and the cover will come off. |
| | |
| | /Håkan |
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