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DIY For Audio
Musical Fidelity F15 repair "nightmare"
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<blockquote data-quote="Gerlach" data-source="post: 1028898" data-attributes="member: 18948"><p>Thanks [member=2310]fdlsys[/member] </p><p></p><p>Jip, did check the PSU without anything connected it, stable all the way.</p><p></p><p>Left channel board is the working one, Jip, i removed the the left channel board and connected to the right side of the PSU, it's working and stable and not heating up. Connect the re build right side board to the left side of the PSU, PSU starts heating up and the re build board heating up to and the speaker out put volts all over the place. </p><p></p><p>Good point that, will measure the the good channel board and see what i can find.</p><p></p><p>Will do the bulb test, problem is, the 10w white ceramic resistors on the PSU gets so warm that they start smoking of the heat. </p><p></p><p>Service manual???? that's the massive problem, you cant find them. There some Chines/Japan sites where the guys repuild the a1000 units. But something bugging me , the A1000 units had a external power supply and to what i can see is, they run a lower volts.</p><p></p><p>When you check the Pre board and the PSU board on my one, it shows version 2. Something is telling me, when this unit went up to JHB in the pass for a repair, they swap the boards out with the A1000 board or maybe not?</p></blockquote><p></p>
[QUOTE="Gerlach, post: 1028898, member: 18948"] Thanks [member=2310]fdlsys[/member] Jip, did check the PSU without anything connected it, stable all the way. Left channel board is the working one, Jip, i removed the the left channel board and connected to the right side of the PSU, it's working and stable and not heating up. Connect the re build right side board to the left side of the PSU, PSU starts heating up and the re build board heating up to and the speaker out put volts all over the place. Good point that, will measure the the good channel board and see what i can find. Will do the bulb test, problem is, the 10w white ceramic resistors on the PSU gets so warm that they start smoking of the heat. Service manual???? that's the massive problem, you cant find them. There some Chines/Japan sites where the guys repuild the a1000 units. But something bugging me , the A1000 units had a external power supply and to what i can see is, they run a lower volts. When you check the Pre board and the PSU board on my one, it shows version 2. Something is telling me, when this unit went up to JHB in the pass for a repair, they swap the boards out with the A1000 board or maybe not? [/QUOTE]
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DIY & Tutorials
DIY For Audio
Musical Fidelity F15 repair "nightmare"
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