Bottlehead Forum

Bottlehead Kits => Crack => Topic started by: audiophileboss on July 23, 2013, 02:42:48 PM

Title: Left static
Post by: audiophileboss on July 23, 2013, 02:42:48 PM

I just assembled a crack, speedball to be done soon. There is a static in the left channel at times. When i wiggle the phono plug in the phono jack it is more present. Advice?

Title: Re: Left static
Post by: John EH on July 23, 2013, 03:44:15 PM

Quote from: audiophileboss on July 23, 2013, 02:42:48 PM

I just assembled a crack, speedball to be done soon. There is a static in the left channel at times. When i wiggle the phono plug in the phono jack it is more present. Advice?

When you say at times, what times?  Only when you move the headphone cable?

Have you by chance tried another pair of headphones to see if it is the cable in the headphones?  That is the first thing you need to eliminate before you start troubleshooting.

John

Title: Re: Left static
Post by: Paul Birkeland on July 23, 2013, 03:45:29 PM

Try wetting the solder joints on the headphone jack a little bit, as well as the red and white wires that depart from the jack.

-PB

Title: Re: Left static
Post by: Grainger49 on July 24, 2013, 12:11:53 AM

I have had interconnects where the outer shield got loose over the years.  I just gently pinched them in so the were again tight.

Try this after rewetting the solder joints as PB suggests.

Title: Re: Left static
Post by: audiophileboss on July 24, 2013, 12:42:57 AM

Yes, by times i mean when I the cable moves or if the phono moves

Tried the cans on a different peice of equipment and it didnt do that. lol the only other cans I have are 32ohms

Title: Re: Left static
Post by: audiophileboss on July 24, 2013, 08:19:52 AM

So its not the cable. I rewetted all the solder joints on the left channel and especially on the phono jack. Same problem. Any help?

Title: Re: Left static
Post by: John EH on July 24, 2013, 10:49:53 AM

Quote from: audiophileboss on July 24, 2013, 08:19:52 AM

So its not the cable. I rewetted all the solder joints on the left channel and especially on the phono jack. Same problem. Any help?

Speedball is installed?  Are are the LED's lit?

Title: Re: Left static
Post by: audiophileboss on July 24, 2013, 10:51:24 AM

Speedball not installed. But the leds by the 12auf are working

Title: Re: Left static
Post by: Grainger49 on July 24, 2013, 10:57:57 AM

A-B,

You are narrowing it down.  Don't give up hope! 

The problem seems to be around the RCA jack and interconnect.

Can you try some experiments of wiggling other things (on the amp, not your things ;)) to see what else might be involved?

P.S. it would be nice to have at least a first name to call you, not the abbreviation for Allen-Bradley.

Title: Re: Left static
Post by: audiophileboss on July 24, 2013, 01:35:57 PM

Sure, Matt

So I resoldered the left rca connections and all most white wire. I did not check the left channel resistors or capacitors.

Question: did you guys put solder on ALL of the holes on the phono jack? I only soldered those that had wires on it

Title: Re: Left static
Post by: Grainger49 on July 24, 2013, 02:38:11 PM

IIRC, the phono input jack has two connections.  The center one is the signal.  The outer shell is the ground.  Without the ground it hums.  Without the signal it makes no sound.

Title: Re: Left static
Post by: audiophileboss on July 27, 2013, 01:02:06 AM

Ok but should I solder any other of the holes on the phono jack? Or any other suggestions you guys may have?

Title: Re: Left static
Post by: Grainger49 on July 27, 2013, 03:11:38 AM

I'm saying that there are only two holes on RCA jacks.  Both must be soldered in the case of the input jacks.

Do you mean the headphone jack?

Title: Re: Left static
Post by: audiophileboss on July 27, 2013, 06:40:46 AM

Yes the phono jack.

Title: Re: Left static
Post by: Grainger49 on July 27, 2013, 06:43:30 AM

I'm confused.  I asked if you meant the headphone jack and you replied, yes the phono jack.  The inputs are RCA jacks, the output is a Phone jack.

What do you mean?  The input or output?

Title: Re: Left static
Post by: audiophileboss on July 27, 2013, 08:11:14 AM

Output. Phone jack. I have always called it a phono jack. Thanks for your help, please respond if I should fill all the holes on the phone jack

Title: Re: Left static
Post by: audiophileboss on July 27, 2013, 08:43:18 AM

The phone jack. Should I solder all the holes shut

Title: Re: Left static
Post by: audiophileboss on July 27, 2013, 02:31:26 PM

Fixed! Soldered all the holes on the phone jack, not only the ones that had wires on them. All gone!

Title: Re: Left static
Post by: Grainger49 on July 28, 2013, 02:28:16 AM

You needed only to solder the connectors that had components or wires in them.  Filling the others looks neat but doesn't have an effect.

Glad you got it fixed!