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In Reply to: RE: Magnum Dynalab MD-90 problems posted by fredtr on December 08, 2016 at 08:11:08
nope -- not connected to outdoor antenna. no lightning. all the other equipment on this same power conditioner works. this tuner just flat died. lights come on. needles don't move. never had a problem like this with any other piece of gear.
unfortunately this machine gets so little use and my finances are such that it's simply not worth $150 for me to fix. I was hoping someone would say "just tap it above the power input" or "flick the middle switch three times while whistling Oh Canada" or something like that. I hate to say this because I know it gets good reviews but this turned out to be a waste of money. and I can't even sell it on Audiogon because it doesn't work....
perhaps someone else knows the magic elixir....
If you can get it fixed for $150, a freshly aligned MD-90 should sell for well over $500.
And another option is list it here on the Asylum Marketplace, free listing and can list items for parts or repair.
My first MD the bottom of the line lasted for over 20 years with lots of use. and it just needed an alignment, I traded it in for an reconditioned Etude, that works perfectly.
Start with your basic - open it up and see if there are any fuses inside.
If not the front end is basically all IC chips. a little static and poof!
Thanks. I was thinking of taking it to a local old-school audio guy who fixes a range of gear here in Seattle -- he's good and affordable. But when you say IC chips it sounds proprietary and perhaps beyond his ken. Does that sound right?
Thanks for your help. I'm not that knowledgeable about radio stuff...perhaps I simply have unfair expectations that tuners are trouble-free components.
odd that yours would have defecated the bed, as they say.
Certainly could've been a static discharge, but the fact you've got lights suggests (to me) it wasn't a lightning strike.
One thing that does come to mind (and I know nothing about this particular tuner). Most FM MPX stereo tuners have an interstation muting circuit. It will "squelch" the audio if there is not signal above a certain threshold. Perhaps you have the muting ON and insufficient signal strength to unmute the tuner? Switch the muting off if you can (or switch to FM MONO, which usually disables muting) and tune it. See if you get anything (e.g., the "whoosh" of FM 'static').
Is the antenna (still) properly connected to it? if, e.g., it's 300 ohm twinlead, make sure the two 'legs' of the twinlead aren't shorted at the antenna connectors on the tuner.
The waning popularity of FM has made tuners (especially more modern/digital and mediocre ones) pretty much a buyers' market. You can probably pick up a decent one (locally) for less than repair will cost for the M-D if there's really something wrong with it.
all the best,
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