Bush AC34 restoration - quiet audio, help, please.

[Gabe001]

The easiest way to start if you have no specialised equipment (like me) is to try and play some kind of sound (using a cheap bluetooth receiver for example, or phone or iPod etc) and going in at the volume control. All you need is a stereo cable and some crocodile clips. If the set is still quiet, the problem most likely lies with the output phase.

Gabriel

[John10b]

I’ve just put my AC34 on the bench and carried out some basic observations, I restored this set last year.
1. Touching the PU socket with volume control full up getting a good buzz.
2. With the set near my workshop window, using only the frame aerial, I can receive stations on both LW and MW with more than enough volume to comfortably listen too.
The problem I had with the set was the second IF capacitor had a broken connection, which I repaired.
I then carried out alignment and this made a huge difference.
Hope that helps.
John

[Scotorvm]

Originally Posted by Freya

Did you change any pF caps inside the cans ?

Hi, no nothing changed inside the cans. Just the visible wax ones under the chasis, Didn't touch the wee square brown ones either.

[Scotorvm]

Originally Posted by Gabe001

The easiest way to start if you have no specialised equipment (like me) is to try and play some kind of sound (using a cheap bluetooth receiver for example, or phone or iPod etc) and going in at the volume control. All you need is a stereo cable and some crocodile clips. If the set is still quiet, the problem most likely lies with the output phase.

Gabriel

Thanks Gabriel, that's a great tip, I have all those items, will have a bash next week. Cheers.

Lee

[Scotorvm]

Originally Posted by John10b

I’ve just put my AC34 on the bench and carried out some basic observations, I restored this set last year.
1. Touching the PU socket with volume control full up getting a good buzz.
2. With the set near my workshop window, using only the frame aerial, I can receive stations on both LW and MW with more than enough volume to comfortably listen too.
The problem I had with the set was the second IF capacitor had a broken connection, which I repaired.
I then carried out alignment and this made a huge difference.
Hope that helps.
John

That's great John, thanks for that, will try this, not sure about alignment yet, but will look into it.

[John10b]

Just to be clear I carried out IF alignment, after repair.
John