UK Vintage Radio Repair and Restoration Powered By Google Custom Search Vintage Radio and TV 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 15th Apr 2021, 2:57 pm   #1
ludo_2002
Diode
 
Join Date: Feb 2021
Location: Dublin, Republic of Ireland.
Posts: 5
Default Pilot bulb for Philips BIF 270U

hi...I am a newbie here. I have recently acquired a Philips radio BIF 270U which is a LW/MW receiver made here in Ireland, maybe late 50s? The printed model number is BIF 260U but has a hand written 7 over the 6 !
The valve heaters are wired in series with the pilot light and a dropper resistor.

The radio is working but the pilot / facia bulb is missing. It has a thermistor wired in parallel across it. I have measured the AC voltage drop at 20.2V when warmed up.. what sort of bulb do I need here?

Any help would be appreciated..
ludo_2002 is offline  
Old 15th Apr 2021, 9:16 pm   #2
Silicon
Nonode
 
Join Date: Jun 2007
Location: Coulsdon, London, UK.
Posts: 2,152
Default Re: Pilot bulb for Philips BIF 270U

If You don't get an answer, You could start with a 24 Volt, 0.1 Amp bulb and see what happens. Some Philips sets used 19V bulbs.

I don't have access to a service manual at present.
Silicon is online now  
Old 15th Apr 2021, 9:18 pm   #3
Wellington
Hexode
 
Wellington's Avatar
 
Join Date: Jun 2009
Location: Cheshire, UK.
Posts: 363
Lightbulb Re: Pilot bulb for Philips BIF 270U

You've probably found the entry for the BIF260U on Radiomuseum already. I would start there.

I've never tried myself, but it says that they allow guests to download schematics. If you get one for the BIF260U, and it seems sufficiently similar to your set, then it should tell you what type of bulb is required.

Unfortunately, I think Philips sometimes used bulbs with atypical voltages, so even if you discovered the correct type, you may not be able to get one!

If so, I think you could probably substitute a more typically rated bulb and use a resistor to 'drop' the excess voltage. I'm not sure how you'd calculate the value of the resistor, though. Hopefully, someone who's actually done something like this will see your post and adviseā€¦
Wellington is offline  
Old 15th Apr 2021, 10:23 pm   #4
ludo_2002
Diode
 
Join Date: Feb 2021
Location: Dublin, Republic of Ireland.
Posts: 5
Default Re: Pilot bulb for Philips BIF 270U

Hi...yes I have been to Radiomuseum and have downloaded the schematics for the 260U, the bulb is in the drawing but not specified...

However although the plate on my radio states BIF270U, it seems identical to a B2ET67U Philips Orient Cairo made in Egypt in the gallery on Radiomuseum...but no schematics..
ludo_2002 is offline  
Old 15th Apr 2021, 10:24 pm   #5
ludo_2002
Diode
 
Join Date: Feb 2021
Location: Dublin, Republic of Ireland.
Posts: 5
Default Re: Pilot bulb for Philips BIF 270U

Thanks I'll try to find a suitable bulb...may be difficult to find.
ludo_2002 is offline  
Old 16th Apr 2021, 10:03 am   #6
Sideband
Dekatron
 
Sideband's Avatar
 
Join Date: Oct 2003
Location: Croydon, Surrey, UK.
Posts: 7,549
Default Re: Pilot bulb for Philips BIF 270U

Yes more than likely a 19V bulb. You are unlikely to find one of those....they tended to use odd ratings as already stated. Try a 24V .1A as suggested. It's about the nearest you'll get.
__________________
There are lots of brilliant keyboard players and then there is Rick Wakeman.....
Sideband is offline  
Old 16th Apr 2021, 10:13 am   #7
Gabe001
Octode
 
Join Date: Oct 2019
Location: Stockport, Greater Manchester, UK.
Posts: 1,612
Default Re: Pilot bulb for Philips BIF 270U

My 234u uses an 18v 0.1 mes fitting screw in bulb. I replaced with one of the bulbs in the attached picture
Attached Thumbnails
Click image for larger version

Name:	Screenshot_20210416-100710.jpg
Views:	81
Size:	38.3 KB
ID:	231892  
Gabe001 is offline  
Old 16th Apr 2021, 10:58 am   #8
David G4EBT
Dekatron
 
David G4EBT's Avatar
 
Join Date: Feb 2003
Location: Cottingham, East Yorkshire, UK.
Posts: 5,737
Default Re: Pilot bulb for Philips BIF 270U

Quote:
Originally Posted by ludo_2002 View Post
Thanks I'll try to find a suitable bulb...may be difficult to find.
This might be worth a try:

https://www.cp-lighting.co.uk/10X28-19V-0-75W-40ma-MES

Or this:

https://www.cp-lighting.co.uk/10X28-18V-1-8W-100mA-MES

Good luck in your quest.
__________________
David.
BVWS Member.
G-QRP Club member 1339.
David G4EBT is offline  
Old 18th Apr 2021, 3:45 pm   #9
ludo_2002
Diode
 
Join Date: Feb 2021
Location: Dublin, Republic of Ireland.
Posts: 5
Default Re: Pilot bulb for Philips BIF 270U

Thanks they both look like solutions...
ludo_2002 is offline  
Old 10th May 2021, 9:19 am   #10
ludo_2002
Diode
 
Join Date: Feb 2021
Location: Dublin, Republic of Ireland.
Posts: 5
Default Re: Pilot bulb for Philips BIF 270U

Thanks to all. I bought some 24V 2.8W bulbs from Farnell and we have light!
ludo_2002 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 - 2024, vBulletin Solutions, Inc.
Copyright ©2002 - 2023, Paul Stenning.