1987 GE 3 Head Hi-Fi Stereo VCR Acquired Today

[probnot]

Originally Posted by vortalexfan

There's only 3 transistors in my VCR's power supply and all three of them checked fine.

The only other component that measured questionable was the bridge rectifier (D1).

What do you mean by measured questionable?

[vortalexfan]

Originally Posted by probnot

What do you mean by measured questionable?

Well the side of the bridge rectifier that has the (+) and (-) marks on it measures .003V both directions and beeps and the (~) side measures 1.2V both ways and doesn't beep.

[probnot]

Originally Posted by vortalexfan

Well the side of the bridge rectifier that has the (+) and (-) marks on it measures .003V both directions and beeps and the (~) side measures 1.2V both ways and doesn't beep.

Hmm that sounds shorted. On the diode setting, the two ~(AC) pins should measure open (both directions).

For the DC side (+ and -) you should see close to 1.0v but only in one direction.

[vortalexfan]

Originally Posted by probnot

Hmm that sounds shorted. On the diode setting, the two ~(AC) pins should measure open (both directions).

For the DC side (+ and -) you should see close to 1.0v but only in one direction.

That's what I thought. There's a number on the bridge rectifier, I think I might have something in my parts stash that might work, (I had found a couple of baskets at the local SA a couple of years ago that were full of NOS TV and VCR parts like IC chips, capacitors, resistors, diodes, fuses, rectifiers, rectifier bridges etc. that came from a local appliance store that went out of business.)

[vortalexfan]

The Bridge Rectifier in my VCR that was bad is a S1WB S40 Rectifier Bridge, at least that's the numbers on the top of the rectifier bridge which when I look that number up on google, nothing shows up...

See picture below.