Well here goes...
I'm trying to repair a JBL On Stage Micro for a family friend. For those of you who don't know this is a small portable iPod docking station (don't laugh). The audio amplifier has completely burnt out and the manufacturers logo and part number are not visible. As far as I can establish the amplifier is a Class D type, with output filters in a 20 pin small footprint surface mount device. The pinout does not seem to match the footprint of any part I can find. I threfore wondered if anybody knows which part JBL use on this product. I must say I have considering this is a low cost product I am impressed with the build quality of this item and will be interested to here what sort of sound quality it produces. Although an experienced electronics engineer I have had little to do with class D type amplifiers so am using this as a bit of a learning exercise. I have established that the processor on the unit is working and appears to be communicating with the ipod. The analogue pre stages also appear to be functional.
I would appreciate any suggestions.
I guess if all else fails I can graft another part in its place, but would prefer to put the correct part back.
Many thanks
I'm trying to repair a JBL On Stage Micro for a family friend. For those of you who don't know this is a small portable iPod docking station (don't laugh). The audio amplifier has completely burnt out and the manufacturers logo and part number are not visible. As far as I can establish the amplifier is a Class D type, with output filters in a 20 pin small footprint surface mount device. The pinout does not seem to match the footprint of any part I can find. I threfore wondered if anybody knows which part JBL use on this product. I must say I have considering this is a low cost product I am impressed with the build quality of this item and will be interested to here what sort of sound quality it produces. Although an experienced electronics engineer I have had little to do with class D type amplifiers so am using this as a bit of a learning exercise. I have established that the processor on the unit is working and appears to be communicating with the ipod. The analogue pre stages also appear to be functional.
I would appreciate any suggestions.
I guess if all else fails I can graft another part in its place, but would prefer to put the correct part back.
Many thanks