Great repair review!
I have a pair of KEF LSX which has a power issue on the secondary speaker. Whenever I plug in the secondary speaker, the relay keeps ticking. My guess that it is trying to turn on but due to a fault somewhere on the PSU board, it switches off. I measured some voltages and found out that the DC output of the rectifier seems very imbalanced. On the (+) side, the DC output was 133 Vdc and (-) side was 28 Vdc. I compared the voltage values with the primary speaker PSU and on the (+) and (-) side, it was both 133 Vdc.
Any help will be greatly appreciated as I feel that I am at a deadend. Thank you in advance!
I have a pair of KEF LSX which has a power issue on the secondary speaker. Whenever I plug in the secondary speaker, the relay keeps ticking. My guess that it is trying to turn on but due to a fault somewhere on the PSU board, it switches off. I measured some voltages and found out that the DC output of the rectifier seems very imbalanced. On the (+) side, the DC output was 133 Vdc and (-) side was 28 Vdc. I compared the voltage values with the primary speaker PSU and on the (+) and (-) side, it was both 133 Vdc.
Any help will be greatly appreciated as I feel that I am at a deadend. Thank you in advance!