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| markust |
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Posted: 25 Apr 2019, 18:14
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| My CLD-D925 just had the same problem - H2 error when it was cold and shutting off immediately after power up. When getting warmer, it managed to stay on. Turned out the C208 (1000uF/10V) was dying and drawing the -5V down to -2.5...-3.5V (temperature dependent). No visible problem with this capacitor, but with heat gun and ice spray the problem could be quickly tracked down to the C208. After substituting C208 with a new 1000uF everything works fine again, power at -5.1V as it should. |
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| markust |
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Posted: 27 Feb 2020, 23:21
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Just for the improvement of all of us, could you add a few details about how you used the heat gun and ice spray to identify the culprit capacitor?
I saw that the H2 error occured mostly when switching the player on from cold state. After some time, the player started working again. That was correlated to the -5V supply being between -2.5V (cold) and -3.5V (warm). The -3.5V are obviously enough to make the player working, although it should be -5V. So I warmed the power supply board up, turned the player on and measured the -5V power while cooling certain areas of the power supply board down with ice spray. When targeting the right component, I could see the voltage dropping down to -2.5V instanteneously. Warming it up brought it immediately back to -3.5V. After a few iterations, it was clear which capacitor was the culprit. After substituting it, I got a clean -5V again. |
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