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 > Specific Vintage Equipment > Vintage Radio (domestic)

Notices

Vintage Radio (domestic) Domestic vintage radio (wireless) receivers only.

Closed Thread
 
Thread Tools
Old 18th Jul 2007, 1:30 am   #1
Darren-UK
Dekatron
 
Join Date: Apr 2003
Location: Blackpool, Lancashire, UK.
Posts: 4,046
Default Replacement of capacitors.

Hi everyone,

During the course of sorting and archiving the numerous threads in these forums, we come across many questions asking essentially the same question. This question concerns the replacement of old capacitors.

For obvious reasons it's not practical to archive several threads covering the same subject. Conversely it is also difficult to single out any one, or two, thread(s) which adequately answer most questions. This post is therefore intended to answer questions on capacitor replacement in a straightforward, readily accessible manner.

Paul Stenning has some very comprehensive information here which should answer most questions, but we would ask the reader to pay particular attention to the following points :-

1. Ensure you obtain the correct type of capacitor for the intended purpose. For example, those horrid old waxy de/coupling capacitors have a suitable replacement in modern polypropylene types.

2. Silvered-Mica and ceramic types rarely need changing; only do so if there is an obvious problem and not just for the sake of 'changing the whole lot'.

3. Note that modern capacitor values are likely to vary from the originals. For example, an old 0.04uF or 0.05uF job has the modern equivalent of 0.047uF.

4. Ensure the capacitors you are installing are suitable in respect of voltage. Voltages in a radio (etc) circuit vary considerably from one section of the circuit to another. Before you discard your old capacitors following removal, check their voltage rating.

5. Electrolytics. These need careful attention in respect of polarity, as well as temperature rating and working voltage. Take note of the safety aspects concerning reservoir/smoothing electrolytics, especially if your radio (etc) is newly acquired and with unknown component condition.

The above notes and link should give all the information required. Nonetheless, if further help is needed, or if you're unsure of anything, please post your question in the relevant forum section.
__________________
Darren.
Darren-UK is offline  
Closed Thread

Thread Tools



All times are GMT +1. The time now is 11:38 am.


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.