It's a 220uF/250V cap. A 100uF/250V cap would be enough to get you back to troubleshooting.
Better Late than never; voltage problems...
- Thread starter marantzfan
- Start date
marantzfan
New member
OK, I'll see if I can pick one up. Going to feel really stupid if I miswired it. ???
Eh, my knowledge of your operational issues is mostly from screwing up my own projects, so there's certainly no need to feel stupid about anything.
marantzfan
New member
Doesn't look like Radio Shack has anything near that large in stock at the store. Any idea of another place that I might be able to pick one up?
Where abouts are you?
In my area, there's a Fry's Electronics, which has suitable parts. There's also a surplus electronics store run by a bunch of veterans that has all sorts of interesting goodies (even tubes).
When I need a part in short order, I generally never even consider Radio Shack anymore.
You also might be able to go to your local thrift shop and pick up a used camera flash. Pop that baby open and there should be some 330uF/350V photo flash caps that will do the job quite nicely for you.
-PB
In my area, there's a Fry's Electronics, which has suitable parts. There's also a surplus electronics store run by a bunch of veterans that has all sorts of interesting goodies (even tubes).
When I need a part in short order, I generally never even consider Radio Shack anymore.
You also might be able to go to your local thrift shop and pick up a used camera flash. Pop that baby open and there should be some 330uF/350V photo flash caps that will do the job quite nicely for you.
-PB
marantzfan
New member
I'm in the Phoenix Metro area. There is a Fry's not too far away, I'll stop by there. Thank you sir.
marantzfan
New member
Struck out at Fry's too, looks like I'll be ordering one..
marantzfan
New member
Believe it or not it was wired correctly. But, I had to unbraid the wires in order to verify that. When I tried to re-braid them I kept coming up short so I decided to unsolder the wires from the transformer to re-braid them and then re-install. Well, in the process of doing that I managed to melt off the middle transformer solder tab so now I definitely need a new transformer. Damnit!
A little frustrated tonight; time for a glass of wine. Does BH still stock this transformer?
A little frustrated tonight; time for a glass of wine. Does BH still stock this transformer?
marantzfan
New member
Damn, other than that is there anything else I can do?
You could probably glue the lug in place and still use it.
marantzfan
New member
Ok, I'll give that a shot. Still confused as to what the problem is as the transformer was wired correctly and the cap and diodes are all oriented correctly.
Paul Joppa
Moderator
That Allied transformer is, I believe, the one that came with the original version. There is a little magnetically-induced hum from the tube closest to the transformer, but it was usually OK with 5mV cartridges - the 3mV and lower output carts had more of a problem.Caucasian Blackplate said:
We put the power transformer on 1" standoffs in the first revision, which helps - gets the transformer a bit further from the tube. Later, we had the PT-1 custom made to be quieter. (Now the Reduction uses our larger custom preamp power transformer PT-5 with a quite different power supply - not a reasonable retrofit.)
marantzfan
New member
Thanks for your help Mr. Joppa, that's good to know since the cart I'm using (Ortofon 2M Black) is 5mv.
So, the plan is to replace the bulging cap and hook the transformer back up and then take another close look at that area for some discrepancy from the instructions. There aren't a lot of parts there so this should be pretty simple. At first when I noticed the voltages were that far off I knew it had to be something in the power supply and have looked and looked and nothing looks wrong. If nothing jumps out at me and I'm still not getting proper voltage I guess I could try the above referenced transformer..
Wishing now that I had bought the Reduction since its not going to be going anywhere for a while.
So, the plan is to replace the bulging cap and hook the transformer back up and then take another close look at that area for some discrepancy from the instructions. There aren't a lot of parts there so this should be pretty simple. At first when I noticed the voltages were that far off I knew it had to be something in the power supply and have looked and looked and nothing looks wrong. If nothing jumps out at me and I'm still not getting proper voltage I guess I could try the above referenced transformer..
Wishing now that I had bought the Reduction since its not going to be going anywhere for a while.
You can also send your Seduction in for repair if you'd like.
-PB
-PB
marantzfan
New member
I think that's what I will do. Who do I need to contact to set that up?
Grainger49
New member
I bought a Seduction the day they were released. It has the Allied transformer. I built it with the power supply outside the chassis with 4 wires coming to the Seduction chassis.
There was no hum, the transformer was 3 feet away.
That is always an option.
There was no hum, the transformer was 3 feet away.
That is always an option.
marantzfan
New member
Done, it will be nice to have this pre up and running finally.
marantzfan
New member
Incoming!! 
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