Repairing: Difference between revisions
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[[File:NiCd VARTA battery leakage on circuit board (IMG 3313).jpg|thumb|right|250px|A NiCd battery that has leaked in a Korg Poly-61, corroding traces and IC legs.]] |
[[File:NiCd VARTA battery leakage on circuit board (IMG 3313).jpg|thumb|right|250px|A NiCd battery that has leaked in a Korg Poly-61, corroding traces and IC legs.]] |
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[[File:Gebrochene loetstellen.jpg|thumb|right|250px|Two broken solder joints (left) and a delaminated PCB trace (right).]] |
[[File:Gebrochene loetstellen.jpg|thumb|right|250px|Two broken solder joints (left) and a delaminated PCB trace (right).]] |
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[[File: |
[[File:Failed electrolytic capacitors.jpg|thumb|right|250px|Failed electrolytic capacitors with swollen can tops and expelled rubber.]] |
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'''Repairing''' electronic music gear includes [[Electronic circuit fault finding|troubleshooting]] problems, replacing worn or damaged parts (both mechanical and electronic), repairing electrical connections, and performing preventive maintenance.<!--<ref>cite some source source</ref>--> |
'''Repairing''' electronic music gear includes [[Electronic circuit fault finding|troubleshooting]] problems, replacing worn or damaged parts (both mechanical and electronic), repairing electrical connections, and performing preventive maintenance.<!--<ref>cite some source source</ref>--> |
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[[File:Prophet 5 rev 2 missing a power transformer.jpg|thumb|center|400px|[[Sequential Circuits Prophet-5|Prophet 5 rev. 2]] missing a power transformer.]] |
[[File:Prophet 5 rev 2 missing a power transformer.jpg|thumb|center|400px|[[Sequential Circuits Prophet-5|Prophet 5 rev. 2]] missing a power transformer.]] |
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== See also == |
== See also == |
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* [[Common failures]] |
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=== Methods === |
=== Methods === |
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* [[Electronic circuit fault finding]] |
* [[Electronic circuit fault finding]] akd Troubleshooting |
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* [[Desoldering]] |
* [[Desoldering]] |
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* [[Recapping]] |
* [[Recapping]] |
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* [https://forums.syntaur.com/c/synth-repair/5 Synth Repair], Syntaur Forums |
* [https://forums.syntaur.com/c/synth-repair/5 Synth Repair], Syntaur Forums |
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* [https://www.eevblog.com/forum/repair/ Repair], EEVblog Electronics Community Forum |
* [https://www.eevblog.com/forum/repair/ Repair], EEVblog Electronics Community Forum |
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* [https://www. |
* [https://www.reddit.com/r/ElectronicsRepair r/ElectronicsRepair] |
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=== Facebook === |
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* [https://www.facebook.com/groups/vintagesynthrepair Vintage Synth Repair And Mods.] |
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* [https://www.facebook.com/profile.php?id=100068308713433 Technician Larry] |
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=== YouTube === |
=== YouTube === |
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About the general principles. For repairs to a specific piece of equipment, see its page.<!-- List from [https://synth-diy.org/pipermail/synth-diy/2020-October/thread.html favorite Youtube genre - "old guys repairing electronics"], Synth-DIY email list, Oct, Nov 2020 --> |
About the general principles. For repairs to a specific piece of equipment, see its page.<!-- List from [https://synth-diy.org/pipermail/synth-diy/2020-October/thread.html favorite Youtube genre - "old guys repairing electronics"], Synth-DIY email list, Oct, Nov 2020 --> |
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* [https://www.youtube.com/@Synthchaser Synthchaser] |
* [https://www.youtube.com/@Synthchaser Synthchaser] |
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* [https://www.youtube.com/playlist?list=PLF1UA_znYwS4pg41KbOaSwRqAroe0AM20 Musical Instrument teardowns and repairs] by markusfuller |
* [https://www.youtube.com/playlist?list=PLF1UA_znYwS4pg41KbOaSwRqAroe0AM20 Musical Instrument teardowns and repairs] by markusfuller |
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* [https://www.youtube.com/@Syntaur/search?query=repair Syntaur] |
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* [https://www.youtube.com/@DiyguitarpedalsAu/search?query=repair DIY Guitar Pedals] |
* [https://www.youtube.com/@DiyguitarpedalsAu/search?query=repair DIY Guitar Pedals] |
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* [https://www.youtube.com/@MrCarlsonsLab/search?query=repair Mr. Carlson’s Lab] |
* [https://www.youtube.com/@MrCarlsonsLab/search?query=repair Mr. Carlson’s Lab] |
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* [https://www.youtube.com/@mikeselectricstuff/search?query=repair mikeselectricstuff] |
* [https://www.youtube.com/@mikeselectricstuff/search?query=repair mikeselectricstuff] |
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* [https://www.youtube.com/@mjlorton/search?query=repair mjlorton] |
* [https://www.youtube.com/@mjlorton/search?query=repair mjlorton] |
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* [https://www.youtube.com/@SalaScience/search?query=repair Sala Science] |
* [https://www.youtube.com/@SalaScience/search?query=repair Sala Science] |
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⚫ | |||
* [https://www.youtube.com/@UncleDoug/search?query=repair Uncle Doug] |
* [https://www.youtube.com/@UncleDoug/search?query=repair Uncle Doug] |
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* [https://www.youtube.com/@CuriousMarc/search?query=repair CuriousMarc] |
* [https://www.youtube.com/@CuriousMarc/search?query=repair CuriousMarc] |
Latest revision as of 11:06, 14 August 2024
![](https://upload.wikimedia.org/wikipedia/commons/thumb/a/a1/NiCd_VARTA_battery_leakage_on_circuit_board_%28IMG_3313%29.jpg/250px-NiCd_VARTA_battery_leakage_on_circuit_board_%28IMG_3313%29.jpg)
![](https://upload.wikimedia.org/wikipedia/commons/thumb/7/72/Gebrochene_loetstellen.jpg/250px-Gebrochene_loetstellen.jpg)
![](http://static.miraheze.org/sdiywikiwiki/thumb/a/ad/Failed_electrolytic_capacitors.jpg/250px-Failed_electrolytic_capacitors.jpg)
Repairing electronic music gear includes troubleshooting problems, replacing worn or damaged parts (both mechanical and electronic), repairing electrical connections, and performing preventive maintenance.
![](http://static.miraheze.org/sdiywikiwiki/thumb/9/94/Prophet_5_rev_2_missing_a_power_transformer.jpg/400px-Prophet_5_rev_2_missing_a_power_transformer.jpg)
Essentials of electronics repair
- Be Careful
- Avoid causing more damage.
- Be organised and take your time.
- Start simple
- Check easy-to-fix issues first.
- External checks
- Gather information on symptoms.
- Check cables, power supplies and fuses.
- Look for signs of physical damage.
- Cleaning
- Brush and vacuum the device with ESD-safe methods.
- Remove contaminants e.g. from spilled drinks
- Opening the device
- Unplug gear before opening.
- Use soft surfaces to avoid scratches, ensure any separated but still connected parts are well supported.
- Find the service manual (these can have errors)[1] or watch disassembly videos.
- Use containers to keep screws and other fastenings from getting lost.
- Take note of where any parts will go when reassembling.
- Take detailed photos of the internal setup, you may need to refer to these later.
- Initial observations
- Check for battery leakage, physical deformities, and blown fuses, (look for the cause of any blown fuse).
- Look for signs of overheating or smoke.
- Connections between dissimilar metals can corrode or degrade over time.
- Fixing process
- Re-seating connectors can solve many issues. Be very careful not to bend any pins.
- Check for corrosion and clean with contact cleaner.
- Avoid fully removing socketed ICs fully; raise the IC slightly and push down again to clean the contacts.
- Clean or replace scratchy pots.
- Check solder joints and touch up if needed, (with matching solder type). Be careful not to damage any nearby wires plastic parts with the iron.
- Common issues
- Many problems are mechanical rather than electronic.
- In industry when fixing is too time consuming a board is swapped rather than repairing the components.[2]
Showcase
Practical, real-world examples to guide and inspire.
See also
Methods
- Electronic circuit fault finding akd Troubleshooting
- Desoldering
- Recapping
- Replacing components
- SMT reflow soldering
- PCB repair
References
- ^ Re: Duplicating old PCBs... strategies? tips?, Mod Wiggler Forum, 6 Oct 2020
- ^ How to fix electronic music gear by by Craig Anderton, Harmony Central, 13 Feb 2017
Further reading
- How to diagnose and fix everything electronic by Michael Jay Geier, McGraw Hill TAB, 2015, ISBN 9780071848305
- Troubleshooting and Repairing Electronic Music Synthesizers by Delton T. Horn, TAB, 1992, ISBN 9780830639212, (not recommended)
- Prophet 5 technical manual by Sequential Circuits
External links
- Synfo.nl, Synth service manuals, synth IC data sheets and links to synth technicians.
- Beginning pinball repair and circuit board repair, includes useful information.
- WarrantyVoid FAQ - keyboard & sound toy modification, circuit-bending, includes useful information.
- The Ship of Thesus, on whether to repair or to preserve vintage synths, Jon Dent blog, 1 Apr 2020
- The Most Common Maintenance Issues of 22 Classic Synths (and How to Fix Them), by Travis Thatcher, Reverb, Sep 2017
Forums
- r/SynthRepairs
- Synth Repair, Syntaur Forums
- Repair, EEVblog Electronics Community Forum
- r/ElectronicsRepair
YouTube
About the general principles. For repairs to a specific piece of equipment, see its page.
- Synthchaser
- Musical Instrument teardowns and repairs by markusfuller
- Syntaur
- DIY Guitar Pedals
- Learn Electronics Repair
- Mr. Carlson’s Lab
- mikeselectricstuff
- The Signal Path
- Jeri Ellsworth
- Fran Blanche
- channelengineer
- ElektronikLabor
- mjlorton
- Sala Science
- Uncle Doug
- CuriousMarc
- Marco Reps
- Jordan Pier
- Techmoan
- bigclivedotcom
- EEVblog
- DextersTechLab