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Vintage Tape (Audio), Cassette, Wire and Magnetic Disc Recorders and Players Open-reel tape recorders, cassette recorders, 8-track players etc.

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Old 29th Jul 2019, 10:11 am   #61
Uncle Bulgaria
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Default Re: Uher CR240 Troubleshooting Best Practice

I'm putting the new switch together now, so it may soon become a 'Success Story'!

Thanks mainly to ms660 - I can't send you a private message Lawrence, so consider a public offer to get you a beer or two. I've really appreciated the time you've taken to deal with my foolish questions on this and the Ferrograph.
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Old 29th Jul 2019, 12:11 pm   #62
ms660
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Default Re: Uher CR240 Troubleshooting Best Practice

No worries, schematics can be a bit daunting at times but remember that they can be broken down into individual blocks and those blocks can be broken down into sub circuits that are easier to understand.

If in doubt, always go back to first principles, AC, DC, voltage, resistance, capacitance, inductance, impedance etc. learn the basics of them and they will stand you in good.

My PM isn't enabled anymore, that's because I am unlikely to give or want personal info via it.

I used to give fault finding tips to individuals via PM but don't anymore as I now feel it's better to discuss such things in an open forum for the benefit of other members and future members.

Lawrence.
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Old 29th Jul 2019, 12:41 pm   #63
Uncle Bulgaria
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Default Re: Uher CR240 Troubleshooting Best Practice

I quite understand. I was only going to offer the aforementioned beer as we're both in Cornwall, and if the sawmilling in your profile is still current I was wondering if you'd be interested in selling any wood. Finding good local timber is a great difficulty!

I'm going away for a month or so, but I will look forward to putting the techniques you've talked me through into practice for the Uher 4000 Report-L that I have stripped down (almost) to its constituent parts...

The switch is in, it works! But is a little too short. Mark II will be longer.

Really chuffed, thank you again.
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Old 29th Jul 2019, 1:06 pm   #64
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Default Re: Uher CR240 Troubleshooting Best Practice

No worries, I don't drink booze anymore, I don't do sawmilling anymore either but I did...a lot.

For fencing timber etc go to a sawmill that does homegrown timber if there's any left, for the better stuff it's the usual builders merchants etc, the only timber I would buy from a DIY shed is small dimension moldings such as beading/doweling etc.

Back when I was in that trade, Truro Sawmills at Penhallow near Truro was the largest homegrown sawmill nearest to where I lived and Cornwall Wood Treatment Services near St. Day was the nearest Tanalizing plant, they also had a good selection of timber both for carcasing and general joinery.

Lawrence.
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Old 2nd Aug 2019, 10:01 pm   #65
Uncle Bulgaria
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Default Re: Uher CR240 Troubleshooting Best Practice

I'm in Denmark and just plugged the Uher into the boat system via the 12-24V input and T10 caught fire. I thought by removing the lamps until I'm back in the country and can replace them that there'd be no load on T10 as the emitter would be detached from ground. Is that wrong, and by being unloaded and nominally 'on' is T10 drawing current that is overloading it? I'd better take it out of circuit...
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Old 3rd Aug 2019, 10:14 am   #66
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Default Re: Uher CR240 Troubleshooting Best Practice

Probably a short somewhere, check your work.

Lawrence.
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Old 3rd Aug 2019, 10:18 am   #67
Uncle Bulgaria
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Default Re: Uher CR240 Troubleshooting Best Practice

The irritation is that it was playing well on batteries with nothing altered since.

If T10's OK to be in circuit with no lamps I can look elsewhere for a short, though I'll take it out anyway as it's toast. As I now haven't even got a multimeter to hand more troubleshooting might have to wait!

Frustrating.
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