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So a while ago I had trouble with some popping and static on the right side of my 299B. I tried various suggestions here;retensioning tube sockets, touch up solder joints. With the help of Craig O we determined my output transformer has bit the dust. I am contemplating having it rewound. My concern is will I now have a dramatic difference in sound from left to right side? Do I have to do both sides?
Follow Ups:
If you haven't already taken it apart, do it. Sometimes the problem is just where the windings are leaving the transformer shorting against the case, or an outer winding, and you can fix it with corona dope or RTV.
Another solution is patience, yes you don't see a lot of these for parts/repair but you just need one.
Transcendar has a replacement for the Scott 340A - don't know how close the footprint is, but it's on their web page. If it's too big, their Fisher 400 output might do. If you replace both, you have a good 299B output that could solve someone else's problem and return part of the cost.
I've always wondered if the core of a problem transformer could be submerged in varnish. Then a vacuum drawn on the container holding the varnish with submerged core to pull any air out allowing the varnish to flow into the core to re-coat it. Followed by baking the core at low heat to allow it to cure.
... I had the same issue a few years back with a Fisher 400, and was lucky enough to find a pair of OTs. The originals from my unit are in boxes waiting to to be shipped off to TRS in Maine. Like the other poster said, having two that were possibly very different wouldn't fly, but I still can't let myself send them off, having just had to do a PT rewind on a Sherwood S5000 (which, as usual, looks perfect and I'm eager to put it back in). The price from the rewinder I've used twice now would prob be in the $350 ballpark (or more) for the Fisher OTs, so it's not exactly cheap to me, but the quality of the work I've had done makes it a good value.
It's a decision I made without consciously realizing it years ago, that keeping the equipment up and running for the long run is worth more to me than having to replace it. Also, the prices on this stuff keeps going UP, so you're probably staying even with the price you could get for it if you ever need or want to sell (at least, to anyone but a hard-core collector).
Have both done. For two reasons....
1) 299B trannies don't come up that often
2) If one is toast....I would worry that the other might not be far behind.
Thanks, I'm just struggling with the costs. It's bordering on being cost prohibitive.
Ah yes, but that's part of the love of having vintage gear. The cost!
Save up and in the future get it as a gift to yourself.
Me - I would do both sides and sell the good one off to defer the cost.
charles
As long as the specs are the same. Will that be likely????
One problem is the laminate cores could be different. Ask the company that is rewinding it if that is the case.
If you're compulsive - like me - I would just bit the bullet and get the two. Because even though you most likely can't tell the difference, you would know it was there. Brain games you know.
Totally agree. The brain games would drive me nuts. I wish I could find two original 299B OT's
I have a good pair of these.
I bought them years ago.
I run equal length speaker cables for the same reason. It shouldn't make a difference, but it takes my mind off of the music.
Dave
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