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joew
 Post subject: 27v Boost issue
PostPosted: Mon Apr 18, 2016 9:28 am 
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Posts: 102
I have checked and re-flowed solder joints.
I have checked the wire locations.
Bypass works.
LED does not light up but there is some signal getting through but the volume is a little less than bypass.

I have installed the 2k2 resister at R13 and the 4k7 at R12.

Thanks for looking....Joe


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byoc
 Post subject: Re: 27v Boost issue
PostPosted: Mon Apr 18, 2016 10:33 am 
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You've got your 4k7 LED limiting resistor and 470K pull down resistor mixed up. That's why your LED doesn't light up, and why you are getting a little bit of signal, but not much.

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duhvoodooman
 Post subject: Re: 27v Boost issue
PostPosted: Mon Apr 18, 2016 11:13 am 
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byoc wrote:
You've got your 4k7 LED limiting resistor and 470K pull down resistor mixed up. That's why your LED doesn't light up, and why you are getting a little bit of signal, but not much.

^ This. Specifically, R1 and R12 are switched. See labeled PCB diagram below.

Image

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joew
 Post subject: Re: 27v Boost issue
PostPosted: Mon Apr 18, 2016 11:44 am 
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They were reversed, but I broke them getting them out. I'll go to Radio Shack to get replacements. Thanks for seeing the problem so quickly.......Joe
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sjaustin
 Post subject: Re: 27v Boost issue
PostPosted: Wed Apr 20, 2016 5:35 am 
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joew wrote:
They were reversed, but I broke them getting them out. I'll go to Radio Shack to get replacements. Thanks for seeing the problem so quickly.......Joe

Let us know if you can't get them there. Someone will comp you some. :)

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