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2359glenn | studio - Page 230

post #3436 of 10645

Forgot to mention, this bad solder point is at the back of the amp by the cathode selector switch, not near the volume pot.

post #3437 of 10645

I decided not to try it.  I have no idea if those capacitors have charge in them, and it might be dangerous.  I'm going to wait until I get further instructions.

post #3438 of 10645
Thread Starter 

Wise...

post #3439 of 10645
Quote:
Originally Posted by Xcalibur255 View Post

I decided not to try it.  I have no idea if those capacitors have charge in them, and it might be dangerous.  I'm going to wait until I get further instructions.

You can solder it there will be no charge on the capacitors at this time.

There is a 100K ohm bleeder resistor in there to discharge the filter capacitors so everything

will be discharged 10 min after turning the amp off.

post #3440 of 10645

*sigh*  I can't get any solder to adhere to my iron.  Need to go pick up some sandpaper and clean the tip first.  rolleyes.gif

post #3441 of 10645
Thread Starter 

So, do you in fact have a loose connection?

post #3442 of 10645

Well I don't get it, but I can't do it.  I've tried over and over, but the solder won't form a joint.  No matter what I do the wire is still loose.

 

People say soldering is so "easy" but this is maddening.


Edited by Xcalibur255 - 6/21/13 at 5:13pm
post #3443 of 10645
Quote:
Originally Posted by Silent One View Post

So, do you in fact have a loose connection?

No question of that.  I don't even know if this was what caused the problem, but this connection has no solder on it at all.

post #3444 of 10645

I think you need a higher wattage soldering iron  like 35 to 40 watts.

post #3445 of 10645

I was able to solder the coupling caps in the Yaqin alright.  It seems like I can't get the heat to transfer, but I keep touching things I don't intend to with the iron too so I'm afraid I may have no choice but to mail it to you for repairs.

 

I have a friend who is pretty handy with a soldering iron, I'll ask him if he wants to give it a try before completely giving up.

 

I hate to mail it again, every time it makes a trip through the mail it gets shaken up and we run the risk of another joint weakening, but I really don't know what else to do about it now.

 

It's nobody's fault, just bad luck, but I'm can't help but feel a little bummed.  I own two tube amps and both of them are broken.  frown.gif


Edited by Xcalibur255 - 6/21/13 at 6:53pm
post #3446 of 10645

Dear Glenn:

 

I want buy a one pair of 6SN7->6DE7 Teflon tube adapters , my headphone amplifier is Woo Audio WA6-SE.

 

Please kindly quote for us for your best with Taiwan.

 

 Best Regraed
 
 David Chen
 

post #3447 of 10645
Quote:
Originally Posted by Xcalibur255 View Post

I was able to solder the coupling caps in the Yaqin alright.  It seems like I can't get the heat to transfer, but I keep touching things I don't intend to with the iron too so I'm afraid I may have no choice but to mail it to you for repairs.

 

I have a friend who is pretty handy with a soldering iron, I'll ask him if he wants to give it a try before completely giving up.

 

I hate to mail it again, every time it makes a trip through the mail it gets shaken up and we run the risk of another joint weakening, but I really don't know what else to do about it now.

 

It's nobody's fault, just bad luck, but I'm can't help but feel a little bummed.  I own two tube amps and both of them are broken.  frown.gif

It is probably best if you send it to me. I will fix it for free no mater what is wrong just shipping.

If you are going to send it send it on Monday Priority or Waite till I get back from Athens.

It is best if you Waite till I come back I am leaving on Friday and that don't give much time for it

to get here. 

post #3448 of 10645

Xcalibur, don't forget the soldering paste.

 

Get a damp sponge and clean the soldering iron tip when it's hot.

post #3449 of 10645

Dear Glenn:


Regular old Bakelite plastic tube adapters is ok. I want buy the one pair.

 

Please kindly quote for us for your best with Taiwan.

 
Best Regraed
 
David Chen

post #3450 of 10645
Quote:
Originally Posted by rosgr63 View Post

Xcalibur, don't forget the soldering paste.

Get a damp sponge and clean the soldering iron tip when it's hot.

I did sand my tip thinking that could be the problem. It repulses solder like oil to water but I don't know why since the tip is clean.

Also a quick note to everybody: I hope the thread isn't quiet because of me. Don't let my little issue disrupt normal conversation. The only reason I posted here and not privately is because I like to hear troubleshooting hints and feedback from everybody.
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