Dynatron HFC40 needs attention.
Discussion
Hi guys, I am looking for a bit of help here - again. 
I have a very old (new in 1972) music system as per the thread title.
Basically it is a record playing unit, with built-in radio, and although it is completely outdated technology and probably doesn't even measure on the hi-fi scale, I would like to have it serviced/repaired so that I can use it again.
As I say, it is probably quite hopeless in hi-fi terms but it used to produce (to my ears at least) a quite pleasant sound quality and I'd like to be able to use it again. I would therefore like to have it serviced/repaired and get it back into a usable state, and I would be delighted if that could be achieved.
You may, quite reasonably, be wondering why I'm bothering with such an old device, when at modest cost I could buy some new equipment that would perform much better.
The answer is that:
a) This system belonged to my mother, who died many years ago, and it therefore has considerable sentimental value for me.
b) I still have a considerable number of LP records (for which I do not have CD equivalents) and I would like to be able to play them on the Dynatron.
It appears that the unit has two problems:
1. It produces a thunderous noise from the speakers when I first switch it on and move the volume control.
2. It appears to have lost some of its original amplifying power.
Given the age of the system, I imagine it is a valve amplifier, so can the the thunderous noise from the speakers be cured by servicing/replacing the volume control/potentiometer, and would the loss of amplifying power be overcome by replacing failing valves, or would it be possible for these to be replaced by transistors?
If there happens to be a PH member within 100 miles or so of Whitby, who is into this kind of activity, I would like to bring the system along and have it dealt with by somebody who will look after it for me.
I appreciate that I'm back in 'the dark ages' with this stuff, but I would really like to have this brought back to life if it can be done. By the way, this is not an exercise in scrounging - I'm quite happy to pay reasonably for the expertise to get the system brought back to life if somebody can do with it for me.
Thanks, guys.
Best wishes all,
Dave.
I have a very old (new in 1972) music system as per the thread title.
Basically it is a record playing unit, with built-in radio, and although it is completely outdated technology and probably doesn't even measure on the hi-fi scale, I would like to have it serviced/repaired so that I can use it again.
As I say, it is probably quite hopeless in hi-fi terms but it used to produce (to my ears at least) a quite pleasant sound quality and I'd like to be able to use it again. I would therefore like to have it serviced/repaired and get it back into a usable state, and I would be delighted if that could be achieved.
You may, quite reasonably, be wondering why I'm bothering with such an old device, when at modest cost I could buy some new equipment that would perform much better.
The answer is that:
a) This system belonged to my mother, who died many years ago, and it therefore has considerable sentimental value for me.
b) I still have a considerable number of LP records (for which I do not have CD equivalents) and I would like to be able to play them on the Dynatron.
It appears that the unit has two problems:
1. It produces a thunderous noise from the speakers when I first switch it on and move the volume control.
2. It appears to have lost some of its original amplifying power.
Given the age of the system, I imagine it is a valve amplifier, so can the the thunderous noise from the speakers be cured by servicing/replacing the volume control/potentiometer, and would the loss of amplifying power be overcome by replacing failing valves, or would it be possible for these to be replaced by transistors?
If there happens to be a PH member within 100 miles or so of Whitby, who is into this kind of activity, I would like to bring the system along and have it dealt with by somebody who will look after it for me.
I appreciate that I'm back in 'the dark ages' with this stuff, but I would really like to have this brought back to life if it can be done. By the way, this is not an exercise in scrounging - I'm quite happy to pay reasonably for the expertise to get the system brought back to life if somebody can do with it for me.
Thanks, guys.
Best wishes all,
Dave.
Do you want to keep it totally original, or just original in appearance?
I'd be tempted to diasable the original power supply, amp and tuner, and hide some modern electronics inside. A suitable micro hifi (wired to the cabinet speakers) and a phono preamp should work if you are happy to use a remote to control it.
If you want to use the original controls, something like a T amp with a phono stage could be wired in.
I'd be tempted to diasable the original power supply, amp and tuner, and hide some modern electronics inside. A suitable micro hifi (wired to the cabinet speakers) and a phono preamp should work if you are happy to use a remote to control it.
If you want to use the original controls, something like a T amp with a phono stage could be wired in.
I'm really sorry I can't be of help, but you've caused some memories for me. My parents had a Dynotron too, this one though:
(Pic from the 'net)
I would suggest casting your net a bit further than PH, that pic for instance was from a Lenco forum, lenco being the turntable maker.
Yours is featured on Youtube.
(Pic from the 'net)
I would suggest casting your net a bit further than PH, that pic for instance was from a Lenco forum, lenco being the turntable maker.
Yours is featured on Youtube.
Edited by 227bhp on Thursday 7th January 20:17
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