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 17th Oct 2018, 9:36 pm   #1
sexton_mallard
Hexode
 
sexton_mallard's Avatar
 
Join Date: Sep 2013
Location: Ellesmere, Shropshire, UK.
Posts: 289
Default Philips 151U

This little radio arguably was the very first valve radio I came across back in the early 1990's when it appeared at my nan's house, donated I think, by a well meaning neighbour. I remember the pffft! as the across-the-mains cap blew up

Many many years later to a few weeks ago, it sat on the top of a large bookcase as an ornament at my parent's house. Time to reactivate! Following a strip down, the case and chassis cleaned up well. Following the usual gentle power-up on bulb limiters, the radio ran well on its original bitumen coated caps, the speaker buzzed and rattled a little. A full recap was done of all black caps, the mains smoother 50-50 mfd electrolytic was fine and ran cool after a period of being slightly warm as it (I assume) reformed.

Removing the speaker dust cap, vacuuming out the voicecoil and magnetic gap as best I could, the rattle was fixed after re gluing the voicecoil leads back down on the face of the cone. I thought I was using another glue but I used PVC pipe jointing cement by mistake which as it turned out worked fine! The speaker now works well .

A bit of lubrication, cleaning and reseating of valves was done, voltages were good and all resistors were OK. I disconnected the external aerial sockets as I had no Y rated caps to hand and the radio performs well enough as an AC/DC set with a ferrite rod aerial.


The set is now back together and blasting out Radio Wales as I type, waiting for it's return to my parents on my next visit. It performs really well!
Attached Thumbnails
Click image for larger version

Name:	WP_20181016_006.jpg
Views:	170
Size:	86.0 KB
ID:	171154   Click image for larger version

Name:	WP_20181016_004.jpg
Views:	193
Size:	49.5 KB
ID:	171155   Click image for larger version

Name:	WP_20181008_002.jpg
Views:	169
Size:	111.7 KB
ID:	171156   Click image for larger version

Name:	WP_20181002_001.jpg
Views:	157
Size:	62.4 KB
ID:	171157  
__________________
Dom

Less snakes...more ladders!

Last edited by sexton_mallard; 17th Oct 2018 at 9:44 pm.
sexton_mallard is offline  
Old 18th Oct 2018, 5:12 pm   #2
vinrads
Octode
 
Join Date: Feb 2009
Location: Chesterfield, Derbyshire, UK.
Posts: 1,835
Default Re: Philips 151U

Hi Dom Well done with the repair, you do right changing all the black capacitors ,these are nice set's and work well on there built in aerial , so you now have a radio that will give good service for years to come .Mick.
vinrads is offline  
Old 18th Oct 2018, 7:18 pm   #3
sexton_mallard
Hexode
 
sexton_mallard's Avatar
 
Join Date: Sep 2013
Location: Ellesmere, Shropshire, UK.
Posts: 289
Default Re: Philips 151U

Thanks Mick. I love this hobby but sometimes doing a 'quick win' job makes up for the slower progress on other 3 projects I have on the go, all stopped at different stages, waiting for parts or cabinet refinishing. Back to this set...The usual slightly wacky Philips engineering is not so evident here apart from the tone switch power and volume pot assembly which always begs the question 'why did they do it that way?' The era of PCBs and semiconductors were not far away when this set was made. I'm hoping the troublesome reputation of the dropper resistor does not show up as the set mysteriously cut out and came back on earlier as if the heater chain disconnected for a few seconds. For now the radio is on while I do the washing up and enjoyed.
__________________
Dom

Less snakes...more ladders!

Last edited by sexton_mallard; 18th Oct 2018 at 7:19 pm. Reason: typos
sexton_mallard is offline  
Old 23rd Oct 2018, 9:14 pm   #4
Phil G4SPZ
Dekatron
 
Phil G4SPZ's Avatar
 
Join Date: Apr 2005
Location: Bewdley, Worcestershire, UK.
Posts: 4,260
Default Re: Philips 151U

Another set saved and now in preservation. Well done!
__________________
Phil

“The place where optimism most flourishes is the lunatic asylum” - Havelock Ellis
Phil G4SPZ is offline  
Closed Thread

Thread Tools



All times are GMT +1. The time now is 12:28 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 - 2019, vBulletin Solutions, Inc.
Copyright ©2002 - 2019, Paul Stenning.