VIP 2 suddenly silent

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Tenorlord
Member
Posts: 13
Joined: Thu Dec 25, 2014 6:43 pm

Re: VIP 2 suddenly silent

Post by Tenorlord » Wed Oct 16, 2019 12:28 am

Pins 7 & 8 show about 18V

Pins 1 & 2 show squat. Nada. Zip.

The ground pins show near 0 ohms resistance.



So, I'm not getting that 8V supply.
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rogue777
Member
Posts: 268
Joined: Mon Sep 14, 2009 7:07 pm

Re: VIP 2 suddenly silent

Post by rogue777 » Wed Oct 16, 2019 8:39 pm

Great, don't forget to check the -18V.
The +8V dc comes from the pwr supply bd.

Check at the pwr supply board,
Measure +8 across caps C21 or C29 and at the connector Pins 1 and 2.
If no +8 at pwr supply bd, with pwr off measure ohms to ground on the +8V supply, ck for short,
other wise C21,29 or C12 could be bad.

Tenorlord
Member
Posts: 13
Joined: Thu Dec 25, 2014 6:43 pm

Re: VIP 2 suddenly silent

Post by Tenorlord » Fri Oct 18, 2019 2:47 pm

I think we may be bumping up against my skill level now if we're testing capacitors with an eye on replacing one. I've soldered maybe 50 connections in the last 50 years and few if any were pretty. I'd have no idea now where to get the proper capacitor either. (Radio Shack and the local Sparky's are out of business) Moreover, the caps don't offer any connections on this side of the board, and I can't even find C12!

Perhaps it's best I leave this up to the professional on the assembly line. ($100)

The main thing is: The power supply board is faulty. I can replace it, and fix this one as a spare.

Comments?

...and THANK YOU, Rogue777

rogue777
Member
Posts: 268
Joined: Mon Sep 14, 2009 7:07 pm

Re: VIP 2 suddenly silent

Post by rogue777 » Fri Oct 18, 2019 7:11 pm

Yes, it helps to have a “cap-meter” to use.
Thanks for trying. I was hoping you might find something obvious that would fix it.
There’s no guarantee that these ideas would work. It’s something to ck.
I hope you can get it fixed for good.

Tree1976
New Member
Posts: 1
Joined: Mon Nov 16, 2020 4:46 pm

Re: VIP 2 suddenly silent

Post by Tree1976 » Mon Nov 16, 2020 5:08 pm

Did replacing the power supply brd help? I am curious as i have had that same issue with my VIP 2. makes a loud "ppt ppt" sound, no lights, no sound,no joy.

If its the pwr supply, do you know the part number?

Thanks!

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