News: Trouble logging in? Log in from the login page.
October 23, 2019, 02:10:12 PM

Author Topic: Errors in Resistance [Resolved]  (Read 407 times)

0 Members and 1 Guest are viewing this topic.

Offline Paul Birkeland

  • Global Moderator
  • Hero Member
  • *****
  • Posts: 11476
Re: Errors in Resistance
« Reply #15 on: October 03, 2019, 05:32:54 AM »
With regard to the LED that isn't lighting, if you wiggle the bare buss wire on that side that goes into pin 9 on the 9 pin socket, is it loose?  (If so, this is the kind of issue that will give you those weird voltages, but it would need to be more than just this connection)
Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

Offline Elizabub

  • Jr. Member
  • **
  • Posts: 10
Re: Errors in Resistance
« Reply #16 on: October 03, 2019, 06:22:58 AM »
I replaced the broken LED last night and retested everything. It lights up now.  I was hoping it was just the LED haha.
« Last Edit: October 03, 2019, 06:25:44 AM by Elizabub »

Offline Paul Birkeland

  • Global Moderator
  • Hero Member
  • *****
  • Posts: 11476
Re: Errors in Resistance
« Reply #17 on: October 03, 2019, 06:37:05 AM »
You may have also nudged the solder joint where the banded end of the LED connects. 

I'm only bringing this up because every Reduction I've had in for repair has had a solder joint issue at pin 9 on at least one of the sockets.  It seems to be a common issue to get that joint all the way flowed.
Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

Offline Elizabub

  • Jr. Member
  • **
  • Posts: 10
Re: Errors in Resistance
« Reply #18 on: October 08, 2019, 02:51:42 PM »
I made a rookie mistake!!  I am so sorry.  I had my multi meter set to AC instead of DC..  Here are my new voltages with * next to ones that are way off.

1.0
2.66.7
3.3
4.145
5.0
6.0
7.68.4
8.0
9.0
10.0
11.0
12.12
13.62.5
14.63.3
15.67.9
16.0
17.0
18.65.7
19.61
20.60.4
21.0
22.0
23.0
24.0
25.0
26.65.4
27.0
28.0
29.144.3
30.0
31.64.1
32.0
33.6.1
34.0
35.0
36.0
37.6.1
38.10.6
39.3.9
40.0
41.3.9
42.10.6
43.0
44.64.4***
45.62.0***
46.0
47.180***
48.0
49.0
50.162.3
51.162.1
52.180
53.180
54.0
55.0
56.144.3
57.144.6
58.0
59.162.1
60.162.1
61.0
62.0


I did notice that voltage seems to be slightly lower that recommended, not sure if that is an issue.  I am adding pics of the location that seems suspect (43-48).  Checked connections and re-flowed anything suspect.

Offline Paul Birkeland

  • Global Moderator
  • Hero Member
  • *****
  • Posts: 11476
Re: Errors in Resistance
« Reply #19 on: October 08, 2019, 02:57:40 PM »
We tweaked the manual a little bit, as some of those power supply terminals were transposed by 1 and not correct.  The voltage set you have is what a working Reduction looks like.

-PB
Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

Offline Elizabub

  • Jr. Member
  • **
  • Posts: 10
Re: Errors in Resistance
« Reply #20 on: October 08, 2019, 03:20:41 PM »
Works perfectly!  Thank you Paul!