Electronics > Repair
Vintage/Classic Chassis/Mechanical Renovation/Restoration Techniques
VK5RC:
Inspired by these excellent posts in eevblog and my own very limited mainly electronic only repair of some old HP gear of mine, I thought putting some of the exceptional repair posts in one location so that it may help those about to MAINTAIN OUR HERITAGE, (OK that is a bit over the top).
tautech has started an excellent 'manual collection' archive (see sticky topic) and I thought posts that look at the chassis/mechanical areas may be of interest.
All credit to
robrenz https://www.eevblog.com/forum/testgear/hp-3410a-ac-microvoltmeter-restoration/msg433969/#msg433969
- Cal/Sticker Removal - Polishing Bakelite knobs
- Polishing BNC - Engraved Dial Restoration
- Texta from Vinyl - Analogue Meter Dial Repair
- Scratch from Plastic/Al - Repair Al Corrosion
- Panel Dent Repair
3D Print Files for those lost feet, knobs, fittings - invaluable
- Thanks beanflying et al
https://www.eevblog.com/forum/testgear/replacement-knobs-feet-and-fittings-for-test-equipment/msg2255136/#msg2255136/
High Quality Finishing 3D printed butons etc Thanks xrunner See reply 110705
https://www.eevblog.com/forum/testgear/test-equipment-anonymous-(tea)-group-therapy-thread/msg3926399/#msg3926399
General Tube/CRO Wisdom!
- Tek Oscilloscope Fault Finding http://www.sphere.bc.ca/test/tek-parts/troubleshooting-scopes.pdf/
https://www.eevblog.com/forum/testgear/vintage-tek-restoration-pictures-by-martin/
- Soldering Ceramic Strips - Repair Filament Transformer Tek555
- Plug In Panel Repair 555 - Cleaning Tek Cover Panels
- Rebuild Filer Frame Tek515 - Panel Construction Tek515
- Dust Removal - Tube Placement 'Map'
CRT restoration for the brave.
KE5FX http://www.ke5fx.com/crt.html
- Extreme DMM Repair
by TiN https://www.eevblog.com/forum/testgear/restoration-glory-of-keithley-2001-dmm/?topicseen
https://www.eevblog.com/forum/repair/repair-old-rusty-hp-3458a/
- TiN A Keithly 'God' - now converting to the dark side - HP. A volt nut extreme++
table of cleaning methods and potential problems
by ModemHead http://mrmodemhead.com/blog/dirty-multimeter-clean-up
also - methods of getting access to various sections of Flukes
- repair of 80 series Fluke terminals http://mrmodemhead.com/blog/fluke-80-series-jack-assembly-rebuild/
Xrunner https://www.eevblog.com/forum/testgear/hp-3435a-extreme-makeover/
- good clean of a MM, ribbon cable repair
https://www.eevblog.com/forum/testgear/wavetek-model-271-function-generator-restoration-calibration/msg959179/#msg959179/
- repair of keyboard membrane
Xrunner and PedrodaGr8 https://www.eevblog.com/forum/testgear/keithley-179-trms-dmm-repairrefurb/
- Repair of Fluke DMM and some great PLASTIC WELDING TIPS reply 72
TEK SCOPE REPAIR (the warm glow of a CRT!)
- 502/555 +Others https://www.eevblog.com/forum/testgear/vintage-tek-restoration-pictures-by-martin/
- 465 https://www.eevblog.com/forum/projects/tektronix-465-repair-and-restoration/msg85387/#msg85387
https://www.eevblog.com/forum/repair/tektronix-465/
- 485 https://www.eevblog.com/forum/repair/tek-485-repair-and-restoration-prologue/
- 2465B https://www.eevblog.com/forum/testgear/tektronix-2465b-oscilloscope-teardown
http://www.condoraudio.com/wp-content/uploads/Projects/Tektronix-2465B-Oscilloscope-Restoration-Repair.pdf
-7603 https://www.eevblog.com/forum/testgear/tek-7603-scope-w-7a18-amp-7b53a-timebase-restoration/msg172135/#msg172135
HP/Agilent/Keysight Mechanical Probs
- 34401 Front-Rear Switch Problem https://www.eevblog.com/forum/testgear/hpagilentkeysight-34401a-2w-problem/
- 53230 Intermittent Ch 1 BNC connector https://www.eevblog.com/forum/testgear/comparing-two-hp-z3805a-gpsdo-10-mhz-frequencies-for-lab-use/15/ see reply 28
- 1980s "clacky" Button Problem http://www.rbarrios.com/projects/hpswitch/
https://www.eevblog.com/forum/repair/quick-fix-my-2c-fix-for-hp-button-key-(in-this-case-hp8662a)/
Old Hard Drive equipment
- https://www.eevblog.com/forum/testgear/preserving-test-equipment-with-hard-drives/
Old equipment Front Panel / Potentiometer Shaft Repair
- Engraved Dial Repair see robrenz re 3410 link above
- Glass Dial Repair https://www.eevblog.com/forum/repair/repro-glass-dial-scale-for-a-hallicrafters-s-38d/
- Repair of twin shafts Mnementh reply 9190 on Test Equipment Anonymous (TEA) group therapy thread ~p368
3D Printing Front Panel Parts
- Phillips PE1539 / PM6670 ; ch_scr uses 3D printer to great application https://www.eevblog.com/forum/repair/late-70s-early-80s-philips-test-gear-bezel-cover-replacement/
Nixie Tubes
- Rejuvenation (some limits) http://www.tube-tester.com/sites/nixie/different/cathode%20poisoning/cathode-poisoning.htm/
- and https://www.eevblog.com/forum/repair/rejuvenating-nixies-some-comments-photos/
VFD Rejuvenation
- https://www.eevblog.com/forum/chat/vacuum-fluorescent-display-rejuvenation/
Fluke DMM repair / restoration; MrModemhead has excellent website
http://mrmodemhead.com/blog/fluke-80-series-jack-assembly-rebuild/
- see xrunners work above re Fluke 179
OLD AC POWER CONNECTORS cubdriver and bitseeker found a great archived webpage
https://web.archive.org/web/20160802081036/http://www.cs.ubc.ca/~hilpert/e/powerConn/index.html/
Cleaning Dead Battery Goop From Terminals. Abbrev from mnementh
....Scrub battery connectors and PCBs with a toothbrush (or where possible without destroying plastic, a stainless steel detail brush) and Windex (Real Windex, or the good store brand stuff that you can smell has with lots of ammonia in it) to neutralize alkaline deposits and clean battery contacts down to clean metal. Rinse with distilled water and dry on a towel on your dash in the sun, or use your hair dryer/heat gun on low as conditions demand.
.... smear a little silicone dielectric grease (can get cheaply from auto/car part suppliers) between the batteries and contacts to prevent corrosive relapse common with cleaned battery terminals.
These 'postees' have freely shared knowledge about areas not easily found elsewhere.
Edits; Links corrected, techniques described, Tek scope section added
PS As a suggestion, include a photo of the finished item, and a brief description of an included technique eg removing texta from vinyl
robrenz:
shameless self promotion :-[
tek-7603-scope-w-7a18-amp-7b53a-timebase-restoration
hp-6114a-precision-power-supply-restoration
Good link for the 3410A ac-microvoltmeter restore
tautech:
--- Quote from: robrenz on January 22, 2015, 01:48:43 pm ---shameless self promotion :-[
--- End quote ---
:bullshit:
Rubbish. You're worthy of of the respect many hold of you for your brilliant work. :-+
C'mon EEVbees where are other threads worthy of inclusion?
robrenz:
Thank you very much!
This Tek 465 repair/restore by ModemHead definitely belongs here :-+
VK5RC:
Thanks for the link, Interesting baking soda toothpaste technique. I have used car polish to get rid of small scratches on a plastic screen before (avoiding lettering) with success but did not take before photos.
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