Smoking Crack untill the Fillaments Glow

Crackhead · 6590

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Offline Crackhead

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Reply #15 on: July 09, 2015, 11:51:02 AM
I "went up one step up on [my] meter" as Caucasian Blackplate suggested which corrected my previous error.  The true readings are:

Terminal # 1 - 84 volts
Terminal # 2 - 221 volts
Terminal # 3 - 0
Terminal # 4 - 221 volts
Terminal # 5 - 81 volts

You gentleman are indeed astute for noticing the transistor discrepancy...  My replacement speedball came directly from Bottlehead with the alternate transistors... It is the model MJE5731G in place for the TIP 50...

I have attached both datasheets and as far as I can tell it should be equivalent... Should I try replacing the replacement with the original version of the transistor?

Thanks again for your assistance.



 


Offline mcandmar

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Reply #16 on: July 09, 2015, 12:07:07 PM
One is a PNP, and the other is an NPN style transistor.  I assume you received those in error so you need to switch back to the TIP50's.   

M.McCandless

Offline Doc B.

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Reply #17 on: July 09, 2015, 12:16:19 PM
Sorry about the mixup. We can send out the correct TIP50s. If you can contact us with your real name (can't send stuff to usernames) we will get those out promptly.

Dan "Doc B." Schmalle
President For Life
Bottlehead Corp.

Offline Crackhead

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Reply #18 on: July 10, 2015, 11:10:18 AM
Headed to RadioShock now for more solder and possibly a rocker switch (which Joshua overlooked sending me last month on the 18th when I was shipped this incomplete speedball kit)... I plan on using the TIP's from my botched speedball which I had removed.  I just want to groove as quick as I can. 

What I'd like to know is if Queen Irene can get a percentage off on one of those fancy shmancy tubes I've been receiving all these emails about...


Offline Paul Birkeland

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Reply #19 on: July 10, 2015, 11:17:01 AM
Quote from: Crackhead on July 10, 2015, 11:10:18 AM
Headed to RadioShock now for more solder and possibly a rocker switch (which Joshua overlooked sending me last month on the 18th when I was shipped this incomplete speedball kit)... I plan on using the TIP's from my botched speedball which I had removed.  I just want to groove as quick as I can. 
Please let us know who you are so we can send these items to you.

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

Offline Crackhead

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Reply #20 on: July 10, 2015, 02:03:24 PM
The most recent readings:

1- 90
2-194
3- 0
4-193
5- 86
6- 0
7- 0 (followed it back to B3 and there is no voltage at the tube either)
8- 0
9- 130
10-0
11- 0
12-0
13- 195
14- 0
15- 208
20- 0
21- 223

Although it no longer emits glow, perhaps another 5 watt 270 ohm resistor would go well in place of my original...

My most recent Invoice ID: 1163
The one prior was: 1085

My sincerest thanks


Offline Crackhead

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Reply #21 on: July 11, 2015, 07:49:18 AM
Still not Crackin'  :'(

I only hear faint music from the right channel when everything is cranked...

Terminal 7 from the tube is not an issue?

Thanks

(https://forum.bottlehead.com/proxy.php?request=http%3A%2F%2Fs23.postimg.org%2F607p1n1kr%2FIMG_3607.jpg&hash=150fbd27b107483a98d66a41510d5e3664158924)


Offline Paul Birkeland

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Reply #22 on: July 11, 2015, 08:23:26 AM
Quote from: Crackhead on July 11, 2015, 07:49:18 AM

Terminal 7 from the tube is not an issue?


If your voltages are not correct, it should not be a surprise that the amplifier isn't working.  You also shouldn't attempt to use it since the voltages are not correct.

Neither half of your 6080 is functioning properly, the voltage at terminal 9 is also an issue.

Were you able to source TIP50 transistors?

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

Offline Crackhead

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Reply #23 on: July 14, 2015, 02:40:25 PM
One of my hookups broke and was overlooked... But now that's fixed.  The particular wire is the one in the pic...

(https://forum.bottlehead.com/proxy.php?request=http%3A%2F%2Fs22.postimg.org%2Fwy8m4bcg1%2FIMG_3613.jpg&hash=dcefb4cad58d2a65afc3d195519fb31bc37dfbab)

So the numbers below indicate what my latest measurements show.

1- 93
2-174
3- 0
4-173
5- 72
6- 0
7- 0 (followed it back to B3 and there is no voltage at the tube either)
8- 0
9- 96
10-0
11- 0
12-0
13- 168
14- 0
15- 189
20- 0
21- 214


Offline Nathan

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Reply #24 on: July 14, 2015, 03:15:24 PM
Not to state the obvious but there's lots of wires in the photo you posted

Crack/Speedball, SEX 2.1/C4S, Bryston BHA-1

Sennheiser HD600/Cardas cable, Beyerdynamic T1 2nd Gen, Hifimam HE560/Hifiman balanced cable

Offline Deluk

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Reply #25 on: July 15, 2015, 05:15:36 AM
The one in the middle coming down from the big SB board............


Offline Crackhead

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Reply #26 on: July 15, 2015, 01:47:48 PM
Quote from: Nathan on July 14, 2015, 03:15:24 PM
Not to state the obvious but there's lots of wires in the photo you posted

The undone red one...


Offline Crackhead

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Reply #27 on: July 21, 2015, 04:51:30 PM
Would it be wise to revert back to the lack of a speed ball in order to assert that the stock crack is in fact intact?

Not knowing what to do a few weeks ago I went and redid all of my solder joints anew... I doubt I mucked that up like a fool but it would be nice to rule that possibility out. 

So (Again) the numbers below indicate what my latest measurements show.

1- 93
2-174
3- 0
4-173
5- 72
6- 0
7- 0 (followed it back to B3 and there is no voltage at the tube either)
8- 0
9- 96
10-0
11- 0
12-0
13- 168
14- 0
15- 189
20- 0
21- 214


Offline Paul Birkeland

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Reply #28 on: July 22, 2015, 07:07:22 AM
Can you post some photos of the top and bottom of your larger Speedball board?

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

Offline Crackhead

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Reply #29 on: August 07, 2015, 01:30:34 PM
Numbers from the latest tests since I removed all Speedball components:

Resistance check:

Center pin on left channel reads "0" ohms not 90 Kohms... same "0" reading at the spot where it connects to the pot.

(https://forum.bottlehead.com/proxy.php?request=http%3A%2F%2Fs2.postimg.org%2Flf04yufyh%2FIMG_3809.jpg&hash=07de5e84cbd34766628a314e3fecb40efb59a14f)
« Last Edit: August 07, 2015, 01:33:19 PM by Crackhead »


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