Bottlehead Forum

Bottlehead Kits => Crack => Topic started by: stanmar224 on April 04, 2021, 01:26:53 PM

Title: Speedball upgrade led light not on .
Post by: stanmar224 on April 04, 2021, 01:26:53 PM

So i have Crack 1.1 in full functional condition, then i went for Speedball upgrade . So the problem is one of the red led lights not turning on (D1 B side ) when i do a test after soldering first board to the amp . All voltages and resistance are ok and are same as in the instructions. Not sure what is wrong cause i made absolutely sure all solder points are good . Anyone know what's going on ? Thx

Title: Re: Speedball upgrade led light not on .
Post by: Paul Birkeland on April 04, 2021, 03:37:33 PM

Can you post the voltages you have on terminals 1-10?

How about also posting some build photos?

-PB

Title: Re: Speedball upgrade led light not on .
Post by: stanmar224 on April 26, 2021, 06:35:04 PM

sorry for taking so long i was really busy.
here are the voltages for terminals 1-10
1. 81.7
2. 174
3. 0
4. 174
5. 62
6. 0
7. 106
8. 0
9. 94
10. 0

Title: Re: Speedball upgrade led light not on .
Post by: Paul Birkeland on April 26, 2021, 06:40:38 PM

Is this on the small or the big board?

Title: Re: Speedball upgrade led light not on .
Post by: stanmar224 on April 26, 2021, 06:46:21 PM

its on terminals that are on the bottom , ( closer to volume adjuster)

Title: Re: Speedball upgrade led light not on .
Post by: Paul Birkeland on April 26, 2021, 06:47:38 PM

So the smaller PC board?  Can you post a couple of photos of the board (top and bottom)?

Title: Re: Speedball upgrade led light not on .
Post by: stanmar224 on April 26, 2021, 06:49:18 PM

wait were you talking about board that comes with speedball upgrade or just those 1-10 terminals on the bottom of the amp ??

Title: Re: Speedball upgrade led light not on .
Post by: Paul Birkeland on April 26, 2021, 06:53:43 PM

The Speedball upgrade comes with two green PC boards with white text.  The stock Crack has no PC boards.  One is small and sits over the 9 pin 12AU7 socket and one is larger and sits just forward of the octal 6080 tube socket.

You have said you have a D1 LED out, but there are four D1 LEDs out.  Which board is it on?  Can you post photos of the top and bottom of the PC board with the LED that's not lighting up?

Title: Re: Speedball upgrade led light not on .
Post by: stanmar224 on April 26, 2021, 06:58:19 PM

ok got it . cause you wanted voltages for terminal 1-10 so i thought it was for crack it self . I only installed 1 crack upgrade board cause in manual it said not to proceed if any LEDs are not lighting up. one sec im trying to see how to post pics here

Title: Re: Speedball upgrade led light not on .
Post by: Paul Birkeland on April 26, 2021, 06:58:55 PM

Ah, excellent, you just have the small board in.  That will make things quite a bit easier.

Title: Re: Speedball upgrade led light not on .
Post by: stanmar224 on April 26, 2021, 07:07:49 PM

Here

Title: Re: Speedball upgrade led light not on .
Post by: stanmar224 on April 26, 2021, 07:10:49 PM

Its not letting me post more then 2 pics at a time

Title: Re: Speedball upgrade led light not on .
Post by: Paul Birkeland on April 27, 2021, 04:50:52 AM

You have a backwards transistor on your PC board.

Title: Re: Speedball upgrade led light not on .
Post by: stanmar224 on April 30, 2021, 08:50:59 AM

Which one ?

Title: Re: Speedball upgrade led light not on .
Post by: stanmar224 on April 30, 2021, 08:58:28 AM

Oooh wait i see it . Its that little black one . OMG im so stupid.

Title: Re: Speedball upgrade led light not on .
Post by: Paul Birkeland on April 30, 2021, 09:44:15 AM

It happens, usually the "O" voltage on that side will show more like 50V when you do the voltage checks.  Usually if you turn it back around it will still work fine.