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Old 9th May 2009, 4:04 pm   #138
Station X
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Location: Ipswich, Suffolk, IP4, UK.
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Default Re: Roberts RT7 - problem

If the reading was 1.00 rather than 1 .00 this would indicate a resistance of 1K which would indicate a faulty transformer. 1K is far too round a figure though. I'd expect something like 1.03K or similar.

Once we get confirmation of the readings from stonehopper we should know more about the state of the transformer.

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EDIT. Just noticed that the service sheet gives resistance readings for the windings.

T1 secondary 35 ohms each half. (Measures OK)

T2 primary 2.5 ohms each half.

T2 upper secondary 0.5 ohms each half.

T2 lower secondary 0.2 ohms.

We need readings taken on the 200 ohm range.
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