Help needed with KB KV015 - UK Vintage Radio Repair and Restoration Discussion Forum

JoshWard · 1st Jan 2013, 2:22 pm

Hi all,
A friend of mine's everyday television has decided to start playing up. It's a KB KV015 dual standard set. It's the first time it's let him down since 1989!

He says it's working but the frame and line hold will not lock. He asked me for advice but as I still know very little about televisions I thought I would pick your brains!

He has a circuit from Practical Television (Aug 1970) and I have Trader sheet 1836, so component references from either of those would be of great help.

Cheers,
Josh.

ukcol · 1st Jan 2013, 2:33 pm

Hi Josh

It sounds like a poorly sync separator.

In the 1836 Trader sheet its V8b which is the pentode section of a PCF80. As well as the valve check R63 and R66 and see if that offers a cure.

Colin M

JoshWard · 1st Jan 2013, 11:27 pm

Thanks for the advice Colin, have passed it on

Josh.

JoshWard · 3rd Jan 2013, 2:30 pm

All fixed now thanks to you Colin, it was R66

I'll let you know in 24 years when something else goes wrong

Tazman1966 · 3rd Jan 2013, 3:20 pm

What a grand source of friendship and advice this forum is. Glad the set got sorted

JoshWard · 3rd Jan 2013, 4:09 pm

Definitely!

My friend was over the moon with how quickly and accurately someone was able to help! If he ever gets on the internet I'll make sure he joins up. He's got quite a big collection of radios and a few TVs as well. The KB is his main television!

ukcol · 3rd Jan 2013, 10:05 pm

Quote:

Originally Posted by JoshWard

I'll let you know in 24 years when something else goes wrong

You will be welcome to ask Josh, but I will be 90 years old and possibly non compos mentis.

Colin M

1st Jan 2013, 2:22 pm	#1
JoshWard Octode Join Date: Dec 2005 Location: Near Stowmarket, Suffolk, UK. Posts: 1,962	Help needed with KB KV015 Hi all, A friend of mine's everyday television has decided to start playing up. It's a KB KV015 dual standard set. It's the first time it's let him down since 1989! He says it's working but the frame and line hold will not lock. He asked me for advice but as I still know very little about televisions I thought I would pick your brains! He has a circuit from Practical Television (Aug 1970) and I have Trader sheet 1836, so component references from either of those would be of great help. Cheers, Josh.

1st Jan 2013, 2:33 pm	#2
ukcol Rest in Peace Join Date: May 2003 Location: Harlaxton, Lincolnshire, UK. Posts: 3,944	Re: Help needed with KB KV015 Hi Josh It sounds like a poorly sync separator. In the 1836 Trader sheet its V8b which is the pentode section of a PCF80. As well as the valve check R63 and R66 and see if that offers a cure. Colin M

1st Jan 2013, 11:27 pm	#3
JoshWard Octode Join Date: Dec 2005 Location: Near Stowmarket, Suffolk, UK. Posts: 1,962	Re: Help needed with KB KV015 Thanks for the advice Colin, have passed it on Josh.

3rd Jan 2013, 2:30 pm	#4
JoshWard Octode Join Date: Dec 2005 Location: Near Stowmarket, Suffolk, UK. Posts: 1,962	Re: Help needed with KB KV015 All fixed now thanks to you Colin, it was R66 I'll let you know in 24 years when something else goes wrong

3rd Jan 2013, 3:20 pm	#5
Tazman1966 Nonode Join Date: May 2006 Location: St Albans, Herts, UK. Posts: 2,193	Re: Help needed with KB KV015 What a grand source of friendship and advice this forum is. Glad the set got sorted __________________ All the very best, Tas

3rd Jan 2013, 4:09 pm	#6
JoshWard Octode Join Date: Dec 2005 Location: Near Stowmarket, Suffolk, UK. Posts: 1,962	Re: Help needed with KB KV015 Definitely! My friend was over the moon with how quickly and accurately someone was able to help! If he ever gets on the internet I'll make sure he joins up. He's got quite a big collection of radios and a few TVs as well. The KB is his main television!