The Dynaco Tube Audio Forum

Dedicated to the restoration and preservation of all original Dynaco tube audio equipment - Customer support for Dynaco VTA tube amp kits, all Tubes4hifi.com products and all Dynakitparts.com products


    Scary PA-060 Challenge...

    Share

    Sled108

    Posts : 40
    Join date : 2010-02-03

    Scary PA-060 Challenge...

    Post by Sled108 on Fri Feb 05, 2010 9:50 pm

    Having just thought that the FM Station that I was listening to had another "Technical Difficulty" I didn't give the Silence much Thought, until I turned to see that my ST-70 had gone Dark....SH*T...I turned it off, hoping that the Old Fuse had just had Enough...Well, I dug into it today and started by disconnecting the 360V Leads...Pop!! Goes the New Fuse...Double SH*T..I have read from Curcio's Repair Guide that this means One Thing..Bad Transformer...Oh No!!! Well, I then looked closer, and saw the 55v Bias Lead and pulled that from the Caps...Whaddaya Know...No Pop...Next, I Pulled the Caps and ran the 55v Straight thru the Diode and Resistor...Still no Pop..So then, I put all the tubes back in...No Pop, and now, Glowing Heaters. Hopefully I just had a Bad Cap. I'll know for sure when the New Ones get here...I don't have (2) 100V 47ufs one laying around...I'll let you know how it goes..

    I can get all sorts of Mini Radial's from Parts Express...Would (2)100uf 100V do the Trick...Or, can I do Better?...Jeeze, the 100uf's are just .44 Ea....

    Well, I did happen to have some Caps laying Around...(2)100uf 63V Gold Nichicon's...Yeah, I Know...Man, they are Small, 3/8" x 3/8"...But They Worked...They will at least hold me till I get some Better Ones. Thankfully it wasn't the PA-060...

    Sled108

    Posts : 40
    Join date : 2010-02-03

    Re: Scary PA-060 Challenge...

    Post by Sled108 on Sat Feb 06, 2010 2:13 am

    All Righty Then..Just got 6 x Nichicon 100uf 250V 105C Electrolytic Capacitors for $6.25 Shipped...That should do the Trick, with (4) to Spare...From PA. USA...

    Sal

    Posts : 221
    Join date : 2009-02-05
    Location : Central New Jersey Dynaco-ST70.com

    Re: Scary PA-060 Challenge...

    Post by Sal on Sat Feb 06, 2010 9:56 am

    Where did you get the 6 Nichicon 100uf from?

    Sled108

    Posts : 40
    Join date : 2010-02-03

    Re: Scary PA-060 Challenge...

    Post by Sled108 on Sat Feb 06, 2010 11:33 am

    Here They are...

    http://cgi.ebay.com/6-x-Nichicon-100uf-250V-105C-Electrolytic-Capacitors_W0QQitemZ220523159472QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item3358345fb0

    Sal

    Posts : 221
    Join date : 2009-02-05
    Location : Central New Jersey Dynaco-ST70.com

    Re: Scary PA-060 Challenge...

    Post by Sal on Sat Feb 06, 2010 11:44 am

    Thanks,
    I was looking all over Parts Express for them. I was wondering why shipping was so cheap. BTW, Axial caps would have worked better but you can definitely make due with what you bought.

    Sal

    Sponsored content

    Re: Scary PA-060 Challenge...

    Post by Sponsored content Today at 12:33 pm


      Current date/time is Sat Dec 10, 2016 12:33 pm