Under-chassis access. - UK Vintage Radio Repair and Restoration Discussion Forum

g4aaw pete · 3rd Mar 2013, 2:02 pm

Some pieces of equipment can be difficult to work on.
This includes chassis outside of their enclosure.

One solution is to utilise some form of support, to avoid damage to top-side componets.

In this instance, Duplo or Lego.

An assistant can also be helpful.

ukcol · 3rd Mar 2013, 3:08 pm

This is the radio chassis from my Murphy A40C with two off-cuts of kitchen worktop bolted to the side.

My assistances have grown up now, worst luck.

Colin M

c&s-nut · 3rd Mar 2013, 3:22 pm

I find the use of hollow supports works very well for this purpose.

I use short pieces of 4 inch waste pipe. Valves and other protrusions just drop straight into the pipes. The chassis will move slightly on the supports but will not fall off, as sometimes happens with solid supports.

Jules

awc · 4th Mar 2013, 5:56 pm

Personally, I swear by empty yogurt and double cream plastic pots of various heights. I always keep a good selection by me and build up to the required height by putting one inside another. I also work on an old carpet sample with nice thick soft pile.....

Alex

bobbyball · 4th Mar 2013, 10:45 pm

I find Philips N1500/1700 tapes from my collection (and in their platic boxes so the boxes can be used without the tapes) very handy for supporting things at the edge as quite a tall "tower" can be built up. I have many of these tapes so there is never a shortage of suports. Alternatively VHS/Beta/200 tapes are useful for lower heights.

A bit "extreme" perhaps but I have been collecting tapes of all formats for years and are not exactly "short" of them!!!

Robert

Aub · 5th Mar 2013, 9:19 pm

Quote:

Originally Posted by g4aaw pete

Some pieces of equipment can be difficult to work on.
This includes chassis outside of their enclosure.

One solution is to utilise some form of support, to avoid damage to top-side componets.

In this instance, Duplo or Lego.

An assistant can also be helpful.

Great picture. Starting them young eh?

timewave · 5th Mar 2013, 9:56 pm

Here's how I did it with my Philips 462a.
There's also the advantage of having the little work top to use when the radio is the right way up.

3rd Mar 2013, 2:02 pm	#1
g4aaw pete Heptode Join Date: Jan 2008 Location: Birchington Kent, UK. Posts: 596	Under-chassis access. Some pieces of equipment can be difficult to work on. This includes chassis outside of their enclosure. One solution is to utilise some form of support, to avoid damage to top-side componets. In this instance, Duplo or Lego. An assistant can also be helpful. Attached Thumbnails

3rd Mar 2013, 3:08 pm	#2
ukcol Rest in Peace Join Date: May 2003 Location: Harlaxton, Lincolnshire, UK. Posts: 3,944	Re: Under-chassis access. This is the radio chassis from my Murphy A40C with two off-cuts of kitchen worktop bolted to the side. My assistances have grown up now, worst luck. Colin M Attached Thumbnails

3rd Mar 2013, 3:22 pm	#3
c&s-nut Retired Dormant Member Join Date: Apr 2012 Location: Wakefield, West Yorkshire, UK. Posts: 20	Re: Under-chassis access. I find the use of hollow supports works very well for this purpose. I use short pieces of 4 inch waste pipe. Valves and other protrusions just drop straight into the pipes. The chassis will move slightly on the supports but will not fall off, as sometimes happens with solid supports. Jules

4th Mar 2013, 5:56 pm	#4
awc Retired Dormant Member Join Date: Jul 2005 Location: Somerset, UK. Posts: 334	Re: Under-chassis access. Personally, I swear by empty yogurt and double cream plastic pots of various heights. I always keep a good selection by me and build up to the required height by putting one inside another. I also work on an old carpet sample with nice thick soft pile..... Alex

4th Mar 2013, 10:45 pm	#5
bobbyball Octode Join Date: Jul 2011 Location: Stockport, Greater Manchester Posts: 1,214	Re: Under-chassis access. I find Philips N1500/1700 tapes from my collection (and in their platic boxes so the boxes can be used without the tapes) very handy for supporting things at the edge as quite a tall "tower" can be built up. I have many of these tapes so there is never a shortage of suports. Alternatively VHS/Beta/200 tapes are useful for lower heights. A bit "extreme" perhaps but I have been collecting tapes of all formats for years and are not exactly "short" of them!!! Robert

5th Mar 2013, 9:56 pm	#7
timewave Pentode Join Date: Apr 2006 Location: Clitheroe, Lancashire, UK. Posts: 173	Re: Under-chassis access. Here's how I did it with my Philips 462a. There's also the advantage of having the little work top to use when the radio is the right way up. Attached Thumbnails __________________ Old radio engineers never die, they just go intermit...mit...mit...mit...