Ingersoll XK512B no sound - UK Vintage Radio Repair and Restoration Discussion Forum

Clansman1968 · 1st May 2025, 12:57 pm

Hi got this TV picture is good but no sound any thoughts of what problem would be connection to board and speaker looks fine.

McMurdo · 1st May 2025, 1:57 pm

headphone socket would be a start if it has one.

Nickthedentist · 1st May 2025, 1:59 pm

Is it definitely a UK set with 6.0Mhz sound?

Clansman1968 · 1st May 2025, 2:12 pm

Yes UK model as have instruction manual and was sold in Portsmouth have tried headphones but no sound either.

Welsh Anorak · 1st May 2025, 2:21 pm

Check the PCB connections to the headphone socket - heavy handedness here can crack the print.
If all's OK there you'll need to trace the wiring back to the audio IC.

Clansman1968 · 1st May 2025, 2:23 pm

Ok thanks will do that later.

Clansman1968 · 1st May 2025, 2:35 pm

Might be silly question but do stereo headphones work in mono connection which I assume this would have.

G6ONEDave · 1st May 2025, 2:57 pm

The Ingersoll XK512B service manual shows this as having a 6MHZ sound filter. TV band UHF ch 21-69, PAL colour system I. If you need a scan of the service manual please PM me.

Dave

marceljack · 1st May 2025, 5:42 pm

Quote:

Originally Posted by Clansman1968

Might be silly question but do stereo headphones work in mono connection which I assume this would have.

If you connect a stereo headphone on a mono output, only one of the two headphones will work (the one supposed to be the left one).

Clansman1968 · 1st May 2025, 6:47 pm

Ok thanks.

its ur aerial · 1st May 2025, 8:59 pm

Has it got sound when the Radio function is selected ?

Ken G6HZG.

Clansman1968 · 2nd May 2025, 6:59 am

No sound from radio either.

Nickthedentist · 2nd May 2025, 9:49 am

Ah, that narrows it down a bit then.

Any hiss from the speaker if you put your ear right up to it?

Any buzz if you touch the wiper connection of the volume control?

Clansman1968 · 2nd May 2025, 1:23 pm

No nothing at all.

Clansman1968 · 2nd May 2025, 1:56 pm

Not sure what you mean by wiper connection.

its ur aerial · 2nd May 2025, 2:21 pm

Wipper is the middle connection of the Vol Pot. if you get a hum or buzz when touching, that, it would tend to indicate the Audio O/P is working.
As Glyn mentioned, its worth checking the Headphone Jack for damage or dodgy connections.

Ken G6HZG.

Clansman1968 · 2nd May 2025, 2:43 pm

Yes tried that no sound at all have checked headphone connection looks perfect.

chroma04 · 2nd May 2025, 4:02 pm

I have the Saisho branded version of this set. Mine also had no sound. The cause in my case was that the speaker output coupling electrolytic capacitor had leaked and was open circuit. I don’t know the reference number, but it should be fairly easy to spot, particularly if you have the circuit diagram to hand. It may just be worth a look.

Sideband · 2nd May 2025, 4:35 pm

Quote:

Originally Posted by Clansman1968

Yes tried that no sound at all have checked headphone connection looks perfect.

They may LOOK perfect but have you checked them with a meter? Measure the speaker connections through the headphone socket back to the output stage.

Clansman1968 · 2nd May 2025, 5:36 pm

Thanks for all your help guys but think this is a bit beyond me as don't know enough about the technical side of things.

1st May 2025, 12:57 pm	#1
Clansman1968 Pentode Join Date: Sep 2019 Location: Portsmouth, Hampshire, UK. Posts: 222	Ingersoll XK512B no sound Hi got this TV picture is good but no sound any thoughts of what problem would be connection to board and speaker looks fine. Attached Thumbnails

1st May 2025, 1:57 pm	#2
McMurdo Dekatron Join Date: Jun 2009 Location: Staffordshire Moorlands, UK. Posts: 5,789	Re: Ingersoll XK512B no sound headphone socket would be a start if it has one. __________________ Kevin

1st May 2025, 1:59 pm	#3
Nickthedentist Dekatron Join Date: Jan 2005 Location: Oxford, UK. Posts: 19,112	Re: Ingersoll XK512B no sound Is it definitely a UK set with 6.0Mhz sound?

1st May 2025, 2:12 pm	#4
Clansman1968 Pentode Join Date: Sep 2019 Location: Portsmouth, Hampshire, UK. Posts: 222	Re: Ingersoll XK512B no sound Yes UK model as have instruction manual and was sold in Portsmouth have tried headphones but no sound either.

1st May 2025, 2:21 pm	#5
Welsh Anorak Dekatron Join Date: Apr 2005 Location: North Wales, UK. Posts: 7,656	Re: Ingersoll XK512B no sound Check the PCB connections to the headphone socket - heavy handedness here can crack the print. If all's OK there you'll need to trace the wiring back to the audio IC. __________________ Glyn

1st May 2025, 2:23 pm	#6
Clansman1968 Pentode Join Date: Sep 2019 Location: Portsmouth, Hampshire, UK. Posts: 222	Re: Ingersoll XK512B no sound Ok thanks will do that later.

1st May 2025, 2:35 pm	#7
Clansman1968 Pentode Join Date: Sep 2019 Location: Portsmouth, Hampshire, UK. Posts: 222	Re: Ingersoll XK512B no sound Might be silly question but do stereo headphones work in mono connection which I assume this would have.

1st May 2025, 2:57 pm	#8
G6ONEDave Nonode Join Date: Dec 2019 Location: Owston Ferry, North Lincolnshire, UK. Posts: 2,088	Re: Ingersoll XK512B no sound The Ingersoll XK512B service manual shows this as having a 6MHZ sound filter. TV band UHF ch 21-69, PAL colour system I. If you need a scan of the service manual please PM me. Dave __________________ Quote "All is hyperthetical, until it isn't!" (President Laura Roslin, Battlestar Galactica)

1st May 2025, 6:47 pm	#10
Clansman1968 Pentode Join Date: Sep 2019 Location: Portsmouth, Hampshire, UK. Posts: 222	Re: Ingersoll XK512B no sound Ok thanks.

1st May 2025, 8:59 pm	#11
its ur aerial Heptode Join Date: May 2009 Location: Ryde, Isle of Wight, UK. Posts: 606	Re: Ingersoll XK512B no sound Has it got sound when the Radio function is selected ? Ken G6HZG. __________________ Life is not Hollywood, life is Cricklewood.

2nd May 2025, 6:59 am	#12
Clansman1968 Pentode Join Date: Sep 2019 Location: Portsmouth, Hampshire, UK. Posts: 222	Re: Ingersoll XK512B no sound No sound from radio either.

2nd May 2025, 9:49 am	#13
Nickthedentist Dekatron Join Date: Jan 2005 Location: Oxford, UK. Posts: 19,112	Re: Ingersoll XK512B no sound Ah, that narrows it down a bit then. Any hiss from the speaker if you put your ear right up to it? Any buzz if you touch the wiper connection of the volume control?

2nd May 2025, 1:23 pm	#14
Clansman1968 Pentode Join Date: Sep 2019 Location: Portsmouth, Hampshire, UK. Posts: 222	Re: Ingersoll XK512B no sound No nothing at all.

2nd May 2025, 1:56 pm	#15
Clansman1968 Pentode Join Date: Sep 2019 Location: Portsmouth, Hampshire, UK. Posts: 222	Re: Ingersoll XK512B no sound Not sure what you mean by wiper connection.

2nd May 2025, 2:21 pm	#16
its ur aerial Heptode Join Date: May 2009 Location: Ryde, Isle of Wight, UK. Posts: 606	Re: Ingersoll XK512B no sound Wipper is the middle connection of the Vol Pot. if you get a hum or buzz when touching, that, it would tend to indicate the Audio O/P is working. As Glyn mentioned, its worth checking the Headphone Jack for damage or dodgy connections. Ken G6HZG. __________________ Life is not Hollywood, life is Cricklewood.

2nd May 2025, 2:43 pm	#17
Clansman1968 Pentode Join Date: Sep 2019 Location: Portsmouth, Hampshire, UK. Posts: 222	Re: Ingersoll XK512B no sound Yes tried that no sound at all have checked headphone connection looks perfect.

2nd May 2025, 4:02 pm	#18
chroma04 Pentode Join Date: Jul 2008 Location: Doncaster, South Yorkshire, UK. Posts: 122	Re: Ingersoll XK512B no sound I have the Saisho branded version of this set. Mine also had no sound. The cause in my case was that the speaker output coupling electrolytic capacitor had leaked and was open circuit. I don’t know the reference number, but it should be fairly easy to spot, particularly if you have the circuit diagram to hand. It may just be worth a look. __________________ Chroma 04

2nd May 2025, 5:36 pm	#20
Clansman1968 Pentode Join Date: Sep 2019 Location: Portsmouth, Hampshire, UK. Posts: 222	Re: Ingersoll XK512B no sound Thanks for all your help guys but think this is a bit beyond me as don't know enough about the technical side of things.