UK Vintage Radio Repair and Restoration Powered By Google Custom Search Vintage Radio Service Data

Go Back   UK Vintage Radio Repair and Restoration Discussion Forum > General Vintage Technology > Success Stories

Notices

Success Stories If you have successfully repaired or restored a piece of equipment, why not write up what you did and post details here. Particularly if it was interesting, unusual or challenging. PLEASE DO NOT POST REQUESTS FOR HELP HERE!

Closed Thread
 
Thread Tools
Old 14th Jun 2018, 1:22 pm   #1
Sinewave
Heptode
 
Sinewave's Avatar
 
Join Date: May 2016
Location: Oxfordshire/Bucks borders, UK.
Posts: 502
Default Avo DA212 clean up

Well it's not much of a resoration, but I'm happy with the results.

Avo DA212, the usual leaked battery incident.

So, I mixed bicarbonate of soda in water to make a paste (thanks for the tip Jeremy) and applied it to the contacts.

Some of the contacts I later took out and coated them on a plate.

One the terminals were cleaned very well with the soda, I cleaned them up with a carbon steel wire wheel on a Dremel to polish them up which works a treat.

The negative wire to the PCB needed to be replaced as some of the corrosion had wicked its way up the wire and by the time I could find clean copper, the wire was too short.

So after that, a good general clean of the empty casings....then back to the bench for a post clean test.
Attached Thumbnails
Click image for larger version

Name:	IMAG1029.jpg
Views:	59
Size:	104.9 KB
ID:	164555   Click image for larger version

Name:	IMAG1036.jpg
Views:	57
Size:	92.7 KB
ID:	164556   Click image for larger version

Name:	IMAG1038.jpg
Views:	58
Size:	151.7 KB
ID:	164557   Click image for larger version

Name:	IMAG1040.jpg
Views:	54
Size:	64.1 KB
ID:	164558   Click image for larger version

Name:	IMAG1041.jpg
Views:	54
Size:	67.4 KB
ID:	164559  

__________________
Avometer and vintage Fluke collector. Metrology addict.
Sinewave is offline  
Old 14th Jun 2018, 1:24 pm   #2
Sinewave
Heptode
 
Sinewave's Avatar
 
Join Date: May 2016
Location: Oxfordshire/Bucks borders, UK.
Posts: 502
Default Re: Avo DA212 clean up

Post clean test shows the results of this DA212 agree very closely with my in calibration Fluke 87V.

Tested fine to it's full scale at the 200V ranges and again at 1000V DC and 750V AC ranges. Other ranges are fine too.
Attached Thumbnails
Click image for larger version

Name:	IMAG1042.jpg
Views:	72
Size:	106.4 KB
ID:	164560   Click image for larger version

Name:	IMAG1043.jpg
Views:	62
Size:	66.4 KB
ID:	164561   Click image for larger version

Name:	IMAG1044.jpg
Views:	59
Size:	65.6 KB
ID:	164562  
__________________
Avometer and vintage Fluke collector. Metrology addict.
Sinewave is offline  
Closed Thread

Thread Tools



All times are GMT +1. The time now is 1:50 pm.


All information and advice on this forum is subject to the WARNING AND DISCLAIMER located at https://www.vintage-radio.net/rules.html.
Failure to heed this warning may result in death or serious injury to yourself and/or others.


Powered by vBulletin®
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Copyright ©2002 - 2018, Paul Stenning.