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 12th Apr 2019, 3:26 pm   #1
Pablomontevideo
Diode
 
Join Date: Apr 2019
Location: Montevideo, Uruguay
Posts: 2
Default HMV Mod. 5107

Quote:
Un enorme saludo desde Montevideo, Uruguay.
Vengo a solicitar ayuda para esta radio que no encuentro diagrama. HMV 5107, la cual deseo poder reparar y restaurar.
Tengo problemas en el secundario del transformador de poder, posible cortocircuito de espiras.
Cualquier ayuda será bienvenida.
Adjunto fotos.
Abrazo fraterno amigos!
Pablo
P.D. Es español o utilizo google para escribir en ingles, mil disculpas!
A huge greeting from Montevideo, Uruguay.
I come to ask for help for this radio that I can not find a diagram. HMV 5107, which I want to be able to repair and restore.
I have problems in the secondary of the power transformer, possible short circuit of turns.
Any help will be welcome.
Attached photos.
Brotherly embrace friends!
Pablo
P.S. It's Spanish or I use google to write in English, a thousand apologies!
Attached Thumbnails
Click image for larger version

Name:	IMG_20190404_123002.jpg
Views:	160
Size:	114.5 KB
ID:	181251   Click image for larger version

Name:	IMG_20190404_123010.jpg
Views:	127
Size:	108.5 KB
ID:	181252   Click image for larger version

Name:	IMG_20190404_130401.jpg
Views:	134
Size:	135.3 KB
ID:	181253   Click image for larger version

Name:	IMG_20190412_111809.jpg
Views:	130
Size:	121.9 KB
ID:	181254   Click image for larger version

Name:	IMG_20190412_111946.jpg
Views:	124
Size:	115.9 KB
ID:	181255  

Pablomontevideo is offline  
Old 12th Apr 2019, 3:39 pm   #2
AC/HL
Dekatron
 
AC/HL's Avatar
 
Join Date: Nov 2003
Location: Heckmondwike, West Yorkshire, UK.
Posts: 9,637
Default Re: HMV Mod. 5107

Hi Pablo,
Welcome to the forum.
Yes, please translate before posting.
The HMV is likely to be an export version of a domestic model. Could you please post a photo of the top of the chassis.
AC/HL is offline  
Old 13th Apr 2019, 2:19 am   #3
Pablomontevideo
Diode
 
Join Date: Apr 2019
Location: Montevideo, Uruguay
Posts: 2
Default Re: HMV Mod. 5107

Good evening, dear.
I sent photos of the chassis how they requested me.
I can not get schematic diagram of this model.
I add the valves that this chassis currently has.
I have a fault in the secondary of the transformer, still disconnected all the secondary ... smoke, (short circuit in turns?)
Thank you very much for your invaluable help
Greetings from Montevideo, Uruguay
Pablo Oddone
Attached Thumbnails
Click image for larger version

Name:	IMG_20190412_214752.jpg
Views:	115
Size:	114.1 KB
ID:	181267   Click image for larger version

Name:	IMG_20190412_214833_2.jpg
Views:	87
Size:	35.4 KB
ID:	181268   Click image for larger version

Name:	IMG_20190412_214910.jpg
Views:	87
Size:	80.8 KB
ID:	181269   Click image for larger version

Name:	IMG_20190412_214932.jpg
Views:	95
Size:	71.5 KB
ID:	181270   Click image for larger version

Name:	IMG_20190412_214944.jpg
Views:	87
Size:	96.0 KB
ID:	181271  

Pablomontevideo is offline  
Old 13th Apr 2019, 7:39 am   #4
jonnybear
Octode
 
jonnybear's Avatar
 
Join Date: Nov 2010
Location: Cullompton, Devon, UK.
Posts: 1,434
Default Re: HMV Mod. 5107

Same chassis as the Marconi 7107, have you connected the transformer without any secondary windings connected ?.if it runs cool then it is probably still OK.There are a lot of potential components that can short out the secondary C50,C51,C52,C53, and of course the rectifier.Before switching on the radio all of the paper capacitors will probably need changing + a reform of the electrolytics.
John
jonnybear is offline  
Old 13th Apr 2019, 8:54 am   #5
Boater Sam
Banned
 
Join Date: Dec 2013
Location: Middlewich, Cheshire, UK. & Winter in the Philippines.
Posts: 3,897
Default Re: HMV Mod. 5107

Set looks as though it has been very damp, the paper valve list is turning pink.
The transformer looks reasonable, its not melted the tar. Run it as said with no secondaries connected for a few hours to dry it out.
Boater Sam is offline  
Old 13th Apr 2019, 9:10 am   #6
paulsherwin
Moderator
 
paulsherwin's Avatar
 
Join Date: Jun 2003
Location: Oxford, UK
Posts: 27,787
Default Re: HMV Mod. 5107

A reminder that Pablo is using Google Translate to post messages and read responses. This will work best if everybody replies in simple English without using idiomatic expressions, abbreviations or slang.
paulsherwin is offline  
Old 13th Apr 2019, 10:39 am   #7
bileaflet_valve
Tetrode
 
bileaflet_valve's Avatar
 
Join Date: Jun 2011
Location: Leighton Buzzard, Bedfordshire, UK.
Posts: 88
Default Re: HMV Mod. 5107

Johnnybear seems to be referring to a circuit schematic. Can he post it for Pablo?
Les.
bileaflet_valve is offline  
Old 13th Apr 2019, 10:50 am   #8
Station X
Moderator
 
Station X's Avatar
 
Join Date: Jan 2003
Location: Ipswich, Suffolk, IP4, UK.
Posts: 21,192
Default Re: HMV Mod. 5107

It's available here:-

https://www.service-data.com/product...53/4598/m13453
__________________
Graham. Forum Moderator

Reach for your meter before you reach for your soldering iron.
Station X is online now  
Old 13th Apr 2019, 5:31 pm   #9
ekjdm14
Banned
 
Join Date: Feb 2019
Location: Congleton, Cheshire, UK.
Posts: 609
Default Re: HMV Mod. 5107

From how I read it, I think Pablo has already disconnected the secondary windings and there was still smoke from the transformer. I would agree it does not look like it has overheated particularly, and has been damp. Also looking at some of the corrosion on the chassis I wonder if it could have been salty water/sea air and if this could cause the symptoms?
ekjdm14 is offline  
Closed Thread

Thread Tools



All times are GMT +1. The time now is 5:51 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.