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'LIVEWIRE?' · 2nd Feb 2019, 11:33 pm

I think the grey wire should simply bridge the burnt track, near where the track is 'L' shaped. This is not common with the track to which the brown wire is soldered (as far as I can see from the picture) Les is, as far as I can see, correct. Does the diagram you have not include a picture of the PCB Layout? Most Blaupunkt manuals & circuit diagrams did have this. Incidentally the AD156/157 transistors can be replaced with AD161/162. but, in a DC coupled circuit the other transistors should also be checked. If one or more of these are faulty, replacement output transistors could be destroyed as soon as power is applied.

2nd Feb 2019, 11:33 pm	#4
'LIVEWIRE?' Rest in Peace Join Date: Mar 2006 Location: N.W. Oxfordshire(Chipping Norton) Posts: 7,306	Re: '71 Blaupunkt E I think the grey wire should simply bridge the burnt track, near where the track is 'L' shaped. This is not common with the track to which the brown wire is soldered (as far as I can see from the picture) Les is, as far as I can see, correct. Does the diagram you have not include a picture of the PCB Layout? Most Blaupunkt manuals & circuit diagrams did have this. Incidentally the AD156/157 transistors can be replaced with AD161/162. but, in a DC coupled circuit the other transistors should also be checked. If one or more of these are faulty, replacement output transistors could be destroyed as soon as power is applied. Last edited by 'LIVEWIRE?'; 2nd Feb 2019 at 11:38 pm.