1980s PYE TV with no sound - UK Vintage Radio Repair and Restoration Discussion Forum

19Seventy7 · 23rd Nov 2018, 5:07 am

Hi, I was just looking on ebay at vintage TV sets for sale, and this 1980s PYE tv caught my eye. It is claimed to be working (I have asked for proof) however there is no sound.

My question is will it be an easy fix? I would have thought so, but I have very little knowledge on older TVs so I just wanted to make sure I wont be buying something that I cannot get to work again..

My guess is there is a loose wire, or the speaker cone has rotted, but im not entirely sure.

Thanks

Argus25 · 23rd Nov 2018, 5:35 am

If a TV set is in good order with a good picture and no sound, it will always be possible to fix the fault. However, the fault could be in the sound IF circuit, sound detector, audio pre amp audio output stage or speaker. A competent service engineer could find and fix this fault probably in less than 10 or 20 minutes if they had their test gear with them and a schematic on hand.

However, an inexperienced person who knows little about television test gear, practical electronics and electronics/TV theory might struggle for hours, days, weeks and never be able to fix it.

Your question relates far more to the person who works on the set, and their "skill set" than it does to the TV iself and the technology that comprises the TV. But its always fun to try !

toshiba tony · 23rd Nov 2018, 8:51 am

Hardly vintage, could be a K35 or a K40 chassis, this is purely from memory but audio faults were rare. Why do you assume a rotted cone? If this is the case this is a potentially lethal item with up to 25kv lurking around. I seem to remember they had a speaker muting switch on them.

Sideband · 23rd Nov 2018, 9:20 am

K30, very basic. There might be a headphone socket somewhere, can't remember. Note the volume is at max. Is that a mute switch on the front (across from the on/off switch)?

Lloyd 1985 · 23rd Nov 2018, 10:13 am

Hi,

I used to have the remote controlled version of this with teletext, was a really good set! Im sure it had a really odd (to me at least!) headphone socket, it was a DIN socket, and there was a switch to silence the internal speaker.

The speaker was good in mine, pretty good sound for a TV! The switch opposite the power switch was to adjust the sound between music and speech. The speaker is probably fine in this set, doubt it’s rotted at all, as the set looks in good clean condition.

Regards
Lloyd

steve1010uk · 23rd Nov 2018, 4:33 pm

Like others have said i suspect the little switch by headphone socket needs switching on,

This was a common occurrence on many Philips sets after woman of house (usually) had been dusting and switched it off by accident,

19Seventy7 · 23rd Nov 2018, 5:00 pm

Quote:

Originally Posted by toshiba tony

Why do you assume a rotted cone?

I was just guessing, throwing ideas into what it could possibly be, I don't know for sure, and at the time I posted that (4 AM) I was a quite tired so I wasn't thinking as well as I could have.

19Seventy7 · 23rd Nov 2018, 5:04 pm

Quote:

Originally Posted by steve1010uk

i suspect the little switch by headphone socket needs switching on

I have just asked the seller about this, and fingers crossed that is the case.

19Seventy7 · 23rd Nov 2018, 5:22 pm

Quick Update: The seller said he was testing using an old VCR which uses SCART, but he had to use a coaxial cable, could this be the issue? He said the button made no difference..

Thanks

Panrock · 23rd Nov 2018, 5:44 pm

What is feeding the 'coax' at the other end? Is this definitely a UK-standard set with the sound spacing set to 6MHz? If it's a Euro set for 5.5MHz, no sound from a UK modulator...

Paul Stenning · 23rd Nov 2018, 6:04 pm

Closed, breach of forum rule C4.

23rd Nov 2018, 5:07 am	#1
19Seventy7 Octode Join Date: Jun 2018 Location: Essex, UK. Posts: 1,307	1980s PYE TV with no sound Hi, I was just looking on ebay at vintage TV sets for sale, and this 1980s PYE tv caught my eye. It is claimed to be working (I have asked for proof) however there is no sound. My question is will it be an easy fix? I would have thought so, but I have very little knowledge on older TVs so I just wanted to make sure I wont be buying something that I cannot get to work again.. My guess is there is a loose wire, or the speaker cone has rotted, but im not entirely sure. Thanks Attached Thumbnails Last edited by 19Seventy7; 23rd Nov 2018 at 5:08 am. Reason: forgot to add photos.

23rd Nov 2018, 5:35 am	#2
Argus25 No Longer a Member Join Date: Oct 2016 Location: Maroochydore, Queensland, Australia. Posts: 2,679	Re: 1980s PYE TV with no sound If a TV set is in good order with a good picture and no sound, it will always be possible to fix the fault. However, the fault could be in the sound IF circuit, sound detector, audio pre amp audio output stage or speaker. A competent service engineer could find and fix this fault probably in less than 10 or 20 minutes if they had their test gear with them and a schematic on hand. However, an inexperienced person who knows little about television test gear, practical electronics and electronics/TV theory might struggle for hours, days, weeks and never be able to fix it. Your question relates far more to the person who works on the set, and their "skill set" than it does to the TV iself and the technology that comprises the TV. But its always fun to try ! Last edited by Argus25; 23rd Nov 2018 at 5:40 am.

23rd Nov 2018, 8:51 am	#3
toshiba tony Heptode Join Date: May 2006 Location: Accrington, Lancashire, UK. Posts: 978	Re: 1980s PYE TV with no sound Hardly vintage, could be a K35 or a K40 chassis, this is purely from memory but audio faults were rare. Why do you assume a rotted cone? If this is the case this is a potentially lethal item with up to 25kv lurking around. I seem to remember they had a speaker muting switch on them.

23rd Nov 2018, 9:20 am	#4
Sideband Dekatron Join Date: Oct 2003 Location: Croydon, Surrey, UK. Posts: 7,572	Re: 1980s PYE TV with no sound K30, very basic. There might be a headphone socket somewhere, can't remember. Note the volume is at max. Is that a mute switch on the front (across from the on/off switch)? __________________ There are lots of brilliant keyboard players and then there is Rick Wakeman.....

23rd Nov 2018, 10:13 am	#5
Lloyd 1985 Nonode Join Date: Jun 2008 Location: Coningsby, Lincolnshire, UK. Posts: 2,819	Re: 1980s PYE TV with no sound Hi, I used to have the remote controlled version of this with teletext, was a really good set! Im sure it had a really odd (to me at least!) headphone socket, it was a DIN socket, and there was a switch to silence the internal speaker. The speaker was good in mine, pretty good sound for a TV! The switch opposite the power switch was to adjust the sound between music and speech. The speaker is probably fine in this set, doubt it’s rotted at all, as the set looks in good clean condition. Regards Lloyd

23rd Nov 2018, 4:33 pm	#6
steve1010uk Pentode Join Date: Nov 2006 Location: East Yorkshire, UK. Posts: 131	Re: 1980s PYE TV with no sound Like others have said i suspect the little switch by headphone socket needs switching on, This was a common occurrence on many Philips sets after woman of house (usually) had been dusting and switched it off by accident,

23rd Nov 2018, 5:22 pm	#9
19Seventy7 Octode Join Date: Jun 2018 Location: Essex, UK. Posts: 1,307	Re: 1980s PYE TV with no sound Quick Update: The seller said he was testing using an old VCR which uses SCART, but he had to use a coaxial cable, could this be the issue? He said the button made no difference.. Thanks

23rd Nov 2018, 5:44 pm	#10
Panrock Nonode Join Date: Feb 2005 Location: Worcestershire, UK. Posts: 2,533	Re: 1980s PYE TV with no sound What is feeding the 'coax' at the other end? Is this definitely a UK-standard set with the sound spacing set to 6MHz? If it's a Euro set for 5.5MHz, no sound from a UK modulator...

23rd Nov 2018, 6:04 pm	#11
Paul Stenning Administrator Join Date: Dec 2002 Location: Cardiff Posts: 9,071	Re: 1980s PYE TV with no sound Closed, breach of forum rule C4. __________________ Paul Stenning Forum Admin/Owner and BVWS Webmaster