GuitarPCB | Thomas a Meacham | Activity https://guitarpcb.com/members/gitar335/activity/ Activity feed for Thomas a Meacham. Sun, 31 May 2026 03:54:31 -0400 https://buddypress.org/?v= en-US 30 hourly 2 34fae26726580274d51ad7a7f45ef51f Thomas a Meacham replied to the topic Robin Trower Overdrive in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/robin-trower-overdrive/#post-37764 Thu, 30 Oct 2025 21:51:32 -0400 This is great, thank you for making the link available.

]]> 0 a4b117c29f2ed236738b31c6215824e5 Thomas a Meacham replied to the topic Robin Trower Overdrive in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/robin-trower-overdrive/#post-37741 Thu, 30 Oct 2025 01:39:56 -0400 Thank you for the FAST reply. I really appreciate your help

]]> 0 90b4f4f5e387b45f47b14f4e5ea0079c Thomas a Meacham started the topic Robin Trower Overdrive in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/robin-trower-overdrive/ Thu, 30 Oct 2025 01:17:45 -0400 I was looking at the build guide for the RTO to make certain what parts I have/order. The capacitor 510 specifically. I have not been able to figure this component out. Please anyone?

 

Thanks in advance

Tom

]]> 0 76e3558b5bee3972fe31e855ed4578e0 Thomas a Meacham replied to the topic Debugging in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/debugging/#post-37653 Thu, 23 Oct 2025 03:07:57 -0400 Good answer and very helpful

]]> 0 f9a3118eb12bd8f27429b80cca964904 Thomas a Meacham started the topic Debugging in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/debugging/ Wed, 22 Oct 2025 23:59:26 -0400 I have been building pedals as a hobby and having decent results however I have hit a wall on some of them not working. My question is in general, what do the trace lines on both sides of the board represent. Is this the power or the signal path?    i am in over my head as I have not been trained in electronic circuits. Any response if greatly a…Read more

]]> 0 8db4972481925e1ba21a265ce53b9f27 Thomas a Meacham replied to the topic Best Ever OD -SQUEALING/Sputtery Decay in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/best-ever-od-squealing-sputtery-decay/#post-35243 Mon, 27 Jan 2025 01:23:42 -0500 Barry, I soldered the pots directly and it improved tremendously. I will sit down this week with an audio probe and report findings.

]]> 0 3c2425a78521bcce6d0a149055d9f415 Thomas a Meacham started the topic Best Ever OD -SQUEALING/Sputtery Decay in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/best-ever-od-squealing-sputtery-decay/ Wed, 22 Jan 2025 23:31:56 -0500 Hi again, I have a Best Ever OD that will pass sound as the pedal should sound along with this high pitch squeal. The pedal sounds huge and a really hoping  some help.

Here are things I have tried

-Reflowed all solder joints

-Cleaned and changed all new pots

-Replaced Diodes, LEDS, Capacitors

Please advise of additional tricks

 

]]> 0 d806b71ad51086c281ade07e48e7bf2e Thomas a Meacham replied to the topic Boogie 57 - No sound (solved) in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/boogie-57-no-sound-with-footswitch-and-jacks/#post-32359 Sat, 25 May 2024 23:32:48 -0400 problem solved… used my audio probe and found several marginal solder joints. reflowed and works as it should.

]]> 0 2a8b5a634342d49cf0e745c36bb90b1a Thomas a Meacham replied to the topic Boogie 57 - No sound (solved) in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/boogie-57-no-sound-with-footswitch-and-jacks/#post-32348 Fri, 24 May 2024 23:51:19 -0400 Thanks for the quick reply Barry, I will check them.. also, if you noticed the 10004 diode, I burnt one of the solder pads and relocated what I think is the correct alternative (it works ) do you see any problem?

]]> 0 ea6b2bd06588dfde23bdeb2af7801874 Thomas a Meacham started the topic Boogie 57 - No sound (solved) in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/boogie-57-no-sound-with-footswitch-and-jacks/ Fri, 24 May 2024 21:39:08 -0400 Hi everyone… I recently finished the Boogie 57 and on the test rig it works great. When I connect the jacks, foot switch, all I get is an oscillating  rumble when foot switch is engaged. with foot switch disengaged, it passes clean guitar sound.

 

I look forward to learning what my mistake is.

 

]]> 0 e1103e6b2ba71260f04ecd806e4805bc Thomas a Meacham replied to the topic Sun T - Buzzy Output in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/sun-t-buzzy-output/#post-30853 Wed, 24 Jan 2024 16:09:07 -0500 Hi everyone, I have been trying to determine where the problem is with the audio probe and have not found the problem. I have replaced resistors and metal film capacitors and nothing fixed yet. Interesting find was I removed Q2 and there was no affect to the sound. If I pulled oany of the remaining three I loose sound all together. I am hoping…Read more

]]> 0 6dbd6b2ccb0b806cbfa93c39097b03f3 Thomas a Meacham replied to the topic Sun T - Buzzy Output in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/sun-t-buzzy-output/#post-30831 Mon, 22 Jan 2024 00:59:17 -0500 Thanks, I will report back tomorrow

 

 

]]> 0 8a03ba17ec08d3a682aa84e9d2e5db7e Thomas a Meacham replied to the topic Killer Bee Boost switch issue in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/killer-bee-boost-switch-issue/#post-30826 Sun, 21 Jan 2024 20:43:20 -0500 I do have an audio probe

]]> 0 60709e351a7bb944a0c031a1a5368ae3 Thomas a Meacham replied to the topic Sun T - Buzzy Output in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/sun-t-buzzy-output/#post-30825 Sun, 21 Jan 2024 18:55:50 -0500 I have the Bias set to 4.95 on Q1, Q2, and Q3     I just got them from Barry last week.

 

]]> 0 0d9e269716f949ca7ba4639c21142fc9 Thomas a Meacham started the topic Sun T - Buzzy Output in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/sun-t-buzzy-output/ Sun, 21 Jan 2024 16:34:13 -0500 Hi everyone, I just finished assembly of the Sun T and when I hit the strings, it is a fizzy, buzzy signal that decays quickly. The bias controls work however will not change the Buzzy sound. I have tried replacing the transistors and there s no change in the output sound.The bright switch does work as well as the rest of the controls.

 

Any…Read more

]]> 0 fd8d965d28f3b5582b6f8caf25edf6e8 Thomas a Meacham replied to the topic Tight Box- No Sound in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/tight-box-no-sound/#post-30737 Sun, 14 Jan 2024 11:35:50 -0500 I changed R28 to 10R and the IC voltages are as follows

 

IC1  Pin 8 – 6.8vdc,   Pin 7 – .7vdc,  Pin 1- .5vdc

IC2  Pin 8 – 8.8vdc, Pin 7 – .7vdc, Pin 1 – .5vdc

IC3  Pin 8 – 6.8vdc, Pin 7 – 4.5vdc, Pin 1 – 0vdc

IC4  Pin 8 – 6.8vdc, Pin 7 – 5.3vdc, Pin 1 – 0vdc

The four LED’s on the board glow when I turn the volume up all the way (no strumm…Read more

]]> 0 41e37eae02455b1a1c19cd35fbb991e7 Thomas a Meacham replied to the topic Tight Box- No Sound in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/tight-box-no-sound/#post-30614 Sun, 07 Jan 2024 18:14:25 -0500 One side of R28 8.7v and the opposite side .68v

D9 8.8 – 9v

Leg 7 IC1B-.04

Leg 7 IC2B- .04

]]> 0 a51cad00b3a6a5c0ef45e043244a5cb7 Thomas a Meacham replied to the topic Tight Box- No Sound in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/tight-box-no-sound/#post-30604 Sat, 06 Jan 2024 23:08:18 -0500 Barry, I am getting power to 27, 9V… at pin 1 of the IC’s 1st – .06v, IC2 – .06v, IC3 .73v, IC4 .02v

I did change the power to the other hole,  I am picking up am radio at this point however still no control

 

Thoughts?

Tom

 

 

]]> 0 2cd37a2aaa67786bec5a188b8e9b419b Thomas a Meacham started the topic Tight Box- No Sound in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/tight-box-no-sound/ Tue, 02 Jan 2024 01:11:20 -0500 I just finished putting this together and I get bypass but no sound. I can barely hear a buzz when I hit the strings but controls do nothing to affect the sound

]]> 0 acf1e450a11daaf25a30762dc4e589a3 Thomas a Meacham became a registered member https://guitarpcb.com/activity/p/18157/ Mon, 01 May 2023 21:20:08 -0400 0 312e1dd7b184b265c55261c3019a1b7b Thomas a Meacham became a registered member https://guitarpcb.com/activity/p/18156/ Mon, 01 May 2023 21:20:07 -0400 0