[QuadList] Got my VR 1200's

[C. Park Seward]

Guy

I checked them before power up. I was almost disapointed I didn't find  
more bad ones, what with the new meter and all. They all looked better  
then medium priced Al caps.

I must be lucky. I never have had the smoke come out on power up. I  
never have used the "slo-power" method but I never did an AVR-2 from a  
deep sleep. Now I did have a paper cap explode once but it has been on  
for several hours before it let go. Little bits of paper EVERYWHERE.

Best,
Park

C. Park Seward
818-535-2747 cell
949-679-1870 hm
Visit us at: www.videopark.com
Sent from my iPhone

On Nov 27, 2009, at 7:54 AM, Guy Spiller <quadruplex at verizon.net> wrote:

> Great....more projects to follow here!
> Park, did you check the ESR on all the caps before you first applied  
> power...or after?
> In the anecdotal evidence department, I did find that I got a lot  
> less smoke on the TR-70 I brought up slowly on the Variac than the  
> one I didn't.  Probably replaced 25% or less the number of caps in  
> that one.
> I first learned that trick from John Turner, I believe it was, on  
> powering up an AVR-2 after a long nap.  He said it will blow an  
> incredible number of caps with full line voltage at first.  I  
> followed his recommendation on my first machine, and over a period  
> of about three days, I had it up to full voltage and the signal  
> system was passing nice video input to output with no smoke.
> After I had done that, I noticed that I had no meter, lamp or button  
> action on the transport.  Turns out one of the big transport  
> interconnect cable connectors appeared to be seated fully, but was  
> not.  I seated it, turned it on, and smoke poured forth from the MDA  
> assembly.  Something told me that I should bring it up again slowly  
> on the Variac, but I was feeling bold that day.  Lesson learned.  I  
> haven't yet peeked inside that unit, but I feel sure there are some  
> shorted caps that caused that.
> The second AVR-2, I brought up the same way, although this time,  
> with power going to the transport assembly properly.  This one came  
> up just fine with zero blown caps or smoke, and actually pulls tape,  
> locks up and outputs video...although it appears to have some TBC  
> issues.  I hope to be getting to that and the other AVR-2 over the  
> winter.
> Guy
>
> -- 
> Guy Spiller
> email: quadruplex at verizon.net
> phone: (804) 379-2050
> website: www.GuySpiller.com
> Midlothian, VA
>
>
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