New to me PL400

[oblivion321]

Not a damn thing. No bulb. No lights. Nothing.

 

[laatsch55]

OK, pull the mains fuse and check it...

 

[oblivion321]

Mains fuse is good.

 

[laatsch55]

OK, put the mains fuse back in, bring it up and start checking voltages at the BR and caps....

 

[oblivion321]

Ok. Jiggled the mains fuse holder and DBT came on and went completely dark. Got 76 vdc across the caps and 110 across the BRec. Why would the DBT go completely out?

 

[laatsch55]

Because you are not charging the caps with the rail fuses in, ergo, no current, ergo, no light....

 

[oblivion321]

Gotcha. When I checked this stuff the first time, I thought It seemed ok. Brought it up on the DBT every time and checked, then plugged it in and checked again. I havent checked anything on the board at all.

 

[laatsch55]

Cause we're a long way from that now. Fix the reason it took a "giggle" to make the mains fuse work...

 

[laatsch55]

Be sure to short out the caps before working right beside them...

 

[oblivion321]

Cause we're a long way from that now. Fix the reason it took a "giggle" to make the mains fuse work...

Why do you keep making me answer my own damn ?'s. I was curious why when I jiggled it, it giggled. Never mind. That's for another forum. I will get that straightened out first. If it's the socket itself and not the wiring, I'll replace it.

 

[oblivion321]

Be sure to short out the caps before working right beside them...

Yup. Been there done that at work.

 

[laatsch55]

Hookay, no more reminders on that then...

 

[oblivion321]

Check Twice. No surprise nervous twitches ever again for me.

 

[oblivion321]

Thank you laatsch55. You've been a great help. I will get this thing going.

 

[laatsch55]

Hookay, got the fuseholder problem figured out??

 

[oblivion321]

It definitely seems intermittent. I'll have to reflow the connections and see if it's still a problem. If it's still "giggly" I'll spank it, put it to bed, and buy a new one tomorrow. Speaking of which... gotta get the wife tucked in.

 

[laatsch55]

Ok Bud, check the spring inside too....

 

[laatsch55]

Then post a pic of where you tapped the plus rail voltage for the DC protect, AND where you tapped the secondary AC voltage for the DCP.....

 

[laatsch55]

Ok Bud, check the spring inside too....

The fuseholder.....not the wife......or maybe so there too....

 

[Northwinds]

This is why I do not fuck with amps, I am a Crankologist and nothing more