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Old 6th February 2015, 01:13 AM   #1
joshy is offline joshy  New Zealand
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Default technics power transformer

Hi I have a technics sa t670 and cant find a service manual anywhere. I was hoping if any of you gurus had a idea on the specs ate so I can replace the transformer. Many thanks
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Old 6th February 2015, 07:11 AM   #2
Mooly is offline Mooly  United Kingdom
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If there is no manual available then all you can do is 'work backwards' trying to deduce the DC value of the rails based initially on reservoir cap voltage. For example a 63 volt reservoir cap probably runs at say 50 to 55volts DC implying a 38 volts AC winding.

All very messy and I'll bet this model has multiple secondary's anyway. What is wrong with the original ?
Installing and using LTspice. From beginner to advanced.
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Old 6th February 2015, 08:03 AM   #3
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What's wrong with the original transformer ?.
Most Jap transformers have a primary winding thermal fuse that can be replaced.
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Old 6th February 2015, 08:05 PM   #4
benb is offline benb  United States
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A quick googling brings up this "power test" page, which gives rail voltage and output power, you can surely figure out a transformer rating from this:
Technics SA-T670 Power Test
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