UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Bush DAC90A

'LIVEWIRE?' · 17th Oct 2019, 9:37 pm

The output transformer primaries on these do fail open circuit. I am currently repairing a 90A in which that has happened. Forum member Ed Dinning can rewind the transformer for £30. There are also new output transformers available from various sources, but before 'jumping in with both feet!' do check the DC resistance (should be about 400 ohms from memory), check the speaker(disconnect one lead to measure the DC resistance), and other points as mentioned by Graham (station X)

17th Oct 2019, 9:37 pm	#4
'LIVEWIRE?' Rest in Peace Join Date: Mar 2006 Location: N.W. Oxfordshire(Chipping Norton) Posts: 7,306	Re: Bush DAC90A - power but no sound The output transformer primaries on these do fail open circuit. I am currently repairing a 90A in which that has happened. Forum member Ed Dinning can rewind the transformer for £30. There are also new output transformers available from various sources, but before 'jumping in with both feet!' do check the DC resistance (should be about 400 ohms from memory), check the speaker(disconnect one lead to measure the DC resistance), and other points as mentioned by Graham (station X)