Phillips 212 turn table dead. Seems like power supply issue

[Richard_James]

Actually I broke some side plastic along the fuse and saw how its positioned in line with one ac terminal. There is continuity In the fuse.

Actually transformer is good. I was measuring dc voltage from transformer secondary coil.
Should have used ac scale on multimeter))

I will check that AD transistor tomorrow. Continue the journey into the control board.

So now I'll know. Transformer intakes ac and outputs ac))

 

[Boydk]

YES... you should have used AC scale. There´s no such thing as a DC side of a transformer. It´s all AC.
The DC you´ll get after rectifying.
100 ohm on the mains side and 4 ohm on the secondary side sounds perfectly allright.

 

[esgigt]

So transformer is disconnected from the control board
DC coil resistance is 4ohm

Ac coil is 104ohm

I measured resistance straight from copper coil terminals.
Does this mean transformer is a toast. 4ohm is a little low for this amount or cooper I think. But what do you think? I am not an electric engineer

Transformer seems to be OK..


BTW, there's nothing like a DC coil.. Transformers are AC only and have a primary and secondary side.


So now it'd be good to know how much Vac the secondary produces and how much Vdc exists after rectification. Measure this over the 470uF capacitor. Please also measure the remaining Vac over the capacitor (ripple), for this might give a clue about how well the capacitor is performing.