DUAL HS36 1210

twice the fun
DESERTMAN
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Re: DUAL HS36 1210

Post by DESERTMAN » 06 Jun 2019 20:54

Hello,
I think that the transformer is defective. Your pictures look like that somebody tried to repair this unit and found the transfomer is broken. A case for the dust bin? :(
Regards Werner

vanakaru
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Re: DUAL HS36 1210

Post by vanakaru » 07 Jun 2019 07:12

Since the table turns you need to get power for the amp only. And the light if you like as well. I would leave existing transformer there if the 150V coil really works and powers the motor. Just unsolder the wires you need for the amp. 150V transformer is rare.
For the amp you need new transformer with 12-13.5V output that would be very easy to get. If you want light as well then it needs to have another coil for it - either 6V, 7V, 12V(you need to get new 12V light bulb then). There is plenty of room for two transformers inside the plinth.

DESERTMAN
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Re: DUAL HS36 1210

Post by DESERTMAN » 07 Jun 2019 10:02

vanakaru wrote:
07 Jun 2019 07:12
Since the table turns you need to get power for the amp only. And the light if you like as well. I would leave existing transformer there if the 150V coil really works and powers the motor. Just unsolder the wires you need for the amp. 150V transformer is rare.
For the amp you need new transformer with 12-13.5V output that would be very easy to get. If you want light as well then it needs to have another coil for it - either 6V, 7V, 12V(you need to get new 12V light bulb then). There is plenty of room for two transformers inside the plinth.
Hello,
thats the easiest way to get it fixed.
Regards Werner

timnor
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Re: DUAL HS36 1210

Post by timnor » 14 Jul 2019 08:55

Dear All,

Thanks for all the replies. Following up on my previous posts I purchased a second cheap HS36/1210 and from the two systems I now have one working system !

I'm almost finished setting this up for my daughter. The only problem is the needle. This has the standard CDS 650
cart and a flip-over ceramic needle. The needle I have seems to be twisted so that it's at an angle rather than straight when lowered onto the record. So I need a replacement needle.

I know that this isn't a high end unit. However I want to ensure that the replacement needle doesn't damage my daughters records. I seem to remember there is a replacement diamond needle ?

https://www.pickupnaalden.com/deutsch/p ... _DN-6_1867

I understand if I want to change to a magnetic system such as a Shure M75 I would need a preamp ? I'd rather avoid any more fiddling round. What would you recommend ?

vanakaru
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Re: DUAL HS36 1210

Post by vanakaru » 14 Jul 2019 10:45

Try to find the stylus with identical diamond tips on both sides Lp/S+Lp/S - DN65: 0.6mil diamond. If she does not have 78's to play.
On preamps avoid very cheap (https://www.phonopreamps.com/tc400pp.html). There are plenty of discussions about good and reasonably priced RIAA Phono preamps.

timnor
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Re: DUAL HS36 1210

Post by timnor » 17 Jul 2019 22:11

Thanks. I ordered a diamond stylus which is now mounted. I hoped this would be the end of my problems but alas alak !

The original DN8 had the needles at the same position so that when the needle was flipped it was pointing at the same position. The replacement needles are at different positions on the arm. One is further back than the other and this one cannot be used without distortion.

Second problem is that with both the old and new needles I'm only getting sound from one speaker. When I pull the volume nob to switch to mono both speakers work. Any idea why the speakers would work in mono but one not in stereo ?

vanakaru
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Re: DUAL HS36 1210

Post by vanakaru » 17 Jul 2019 23:03

The needle side that distorts is for 78's. Shellacs have different groove and 78 stylus will not work on LPs really.

When you switch to mono you send the same signal to both channels. If you 650 have problems or the wires are connected wrong or sled contacts are bad(corroded or loose) or the sled wires are bad you get this. Also the amp may be faulty. Sled is the cartridge carrier TK120/122.
If you can run some other source(CD, iPod etc) into TUNER input to test if both channels work. You need DIN to RCA(or 3.5mm plug) adapter for this.

If the amp appears to be faulty try the one from another unit. HS36 amp is not too difficult(not complicated design) to repair if you know how to fix amps.
You can find schematics here:
http://www.hifi-forum.de/bild/schaltpla ... 12300.html

timnor
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Re: DUAL HS36 1210

Post by timnor » 18 Jul 2019 07:11

Thanks a lot for taking the time to reply Vanakaru. Appreciated. I'll check.