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DIY & Tutorials
DIY For Audio
Restoration of Philips B6X63A valve radio from 1956
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<blockquote data-quote="Family_Dog" data-source="post: 839310" data-attributes="member: 82"><p>This seems to indicate that the coupling cap to the g1 of the EL84 had leaked DC, thereby causing the grid to go positive and draw excessive current and blowing the fuse. Shorting the fuse out like that roasted the OPT and probably the output valve as well (EL84). Replacing the EL84 with a new one is just one step, the coupling cap (and indeed probably all the caps) need to be replaced. Souris or SJ Andrews (both in JHB) should be able to assist you with a new transformer, and you could also discuss this with Mars and Ampdog as well, they might be able to assist you with a replacement.</p><p></p><p></p><p>-F_D</p></blockquote><p></p>
[QUOTE="Family_Dog, post: 839310, member: 82"] This seems to indicate that the coupling cap to the g1 of the EL84 had leaked DC, thereby causing the grid to go positive and draw excessive current and blowing the fuse. Shorting the fuse out like that roasted the OPT and probably the output valve as well (EL84). Replacing the EL84 with a new one is just one step, the coupling cap (and indeed probably all the caps) need to be replaced. Souris or SJ Andrews (both in JHB) should be able to assist you with a new transformer, and you could also discuss this with Mars and Ampdog as well, they might be able to assist you with a replacement. -F_D [/QUOTE]
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DIY & Tutorials
DIY For Audio
Restoration of Philips B6X63A valve radio from 1956
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