Hi all,
Been grappling with this one for a while and no success so far.
These little guitar amps are rated at 3W and are quite nice, good sounding busking or bedroom amps.
I have a number of these with blown output chips and thought they would be quite a simple repair!!
On inspection I found that the chips were micro smd 9 ball WLCSP types. They are 1.2mm square and you need a microscope to see them.
Trouble is the type code bears no relevance to anything I can find. No IC manufacturers I've contacted so far have been able to identify the type number 'BP27'.
There are so many of these class D amp devices available with different specs and gains that it's impossible to guess which one would be the correct replacement.
I've tried the Vox forum with no joy either. Schematics are non existent too.
Pity it's not dodgy caps, easy stuff in comparison.
Midibob
Been grappling with this one for a while and no success so far.
These little guitar amps are rated at 3W and are quite nice, good sounding busking or bedroom amps.
I have a number of these with blown output chips and thought they would be quite a simple repair!!
On inspection I found that the chips were micro smd 9 ball WLCSP types. They are 1.2mm square and you need a microscope to see them.
Trouble is the type code bears no relevance to anything I can find. No IC manufacturers I've contacted so far have been able to identify the type number 'BP27'.
There are so many of these class D amp devices available with different specs and gains that it's impossible to guess which one would be the correct replacement.
I've tried the Vox forum with no joy either. Schematics are non existent too.
Pity it's not dodgy caps, easy stuff in comparison.
Midibob
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