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Philips K80
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August 8, 2017
7:09 pm
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PYE625
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Hi Alex, you could check to be sure the line stage is getting a correct drive from the cathode of the PCF802.

There are a number of waveforms worth checking around TS833 (BD115) and onto the PL509’s, plus of course voltages too.

As I said earlier, the set seems quite complex and it will take time to go around and check voltages and wafeforms within the line output stage. There are several semiconductors too, and all it takes is one to be breaking down to be causing the fault. There are many possibilities that need to be eliminated.

The good thing is, you have a short time to compare things before and just after the fault. The only problem is that you cannot leave the set switched on for very long after the fault starts, otherwise you will need many PL500’s !

I hope this makes sense  grin_gif

Andrew.                                                                                   

                         

August 8, 2017
7:40 pm
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nuvistor
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Hi Alex,

LOPTX, Line output transformer.

Frank

August 8, 2017
8:35 pm
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ntscuser
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Digressing for a moment, was the K80 an official Philips import in the UK or an unofficial one?

August 8, 2017
9:40 pm
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PYE625
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ntscuser said
Digressing for a moment, was the K80 an official Philips import in the UK or an unofficial one?  

I would say neither. I think it is a European model only.

It looks quite modern from the front, so much so I would have been surprised to find valves inside.

I like it actually, and wish it had been into the UK.

Andrew.                                                                                   

                         

August 8, 2017
9:48 pm
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PYE625
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I should probably keep quiet, but I still don’t like the look of the getter on the PCF802. It could just be the photo  duno_gif

3.jpgImage Enlarger

 To me it looks milky white towards the edges, like it has a poor vacuum.

Andrew.                                                                                   

                         

August 8, 2017
11:29 pm
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sideband
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PYE625 said

ntscuser said
Digressing for a moment, was the K80 an official Philips import in the UK or an unofficial one?  

I would say neither. I think it is a European model only.

It looks quite modern from the front, so much so I would have been surprised to find valves inside.

I like it actually, and wish it had been into the UK.  

Actually they were imported into the UK because we saw a few in the Philips workshop. I don’t think they were on general sale however and I think they were Granada rental sets. I seem to recall that they had a ‘bought-out guarantee’ which meant that Granada had to fix them. However Philips also had responsibility to repair any sets that Granada couldn’t for any reason, like a burnt-up power supply panel. Philips then repaired the set by replacing the panel but we charged Granada. We thought they were great sets. It also meant that in the trade Tech Advice department we had to be able to help Granada with repairs over the phone.

 

When Granada started to sell them off (after about five years) we saw a few more coming in as ordinary customer repairs.

Is it supposed to do that?

August 9, 2017
12:45 am
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ntscuser
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sideband said

Actually they were imported into the UK because we saw a few in the Philips workshop.

Croydon couldn’t have been very happy about that?

August 9, 2017
7:54 am
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sideband
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Ahh well! It was nothing to do with Croydon. That was where the factory was. The main workshop was a few miles down the road in Waddon which is where I was based for 10 years. Croydon did all the development work for G8’s and G11’s (and G6’s but that was before I started). All the trade and customer repairs were done at Waddon and that is where we saw the K80. The Waddon branch was known as CES and then Philips Service and basically held the workshops and spares department. There was also a trade shop where you could go and buy spares off the shelf.

Is it supposed to do that?

August 9, 2017
3:20 pm
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ntscuser
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sideband said
Ahh well! It was nothing to do with Croydon. That was where the factory was. 

What I meant was that Croydon could not have been happy about Swedish models being imported in competition with their own sets.

August 9, 2017
5:23 pm
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Focusdiode
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I understand the Swedish K80 is a 110 degree model. I’d imagine they were imported into the UK as there was no UK equivalent at the time.

Eventually UK set makers did produce their own 110 degree chassis such as the Thorn 4000 and Philips G9 with delta gun CRTs. They were thin of the ground when they were new let alone nowadays.

Never seen a K80 personally but hear the performance and sound quality is superb.

Well worth restoring. Looking forward to hearing more.

One issue I’m aware of is 110 degree hybrids require a PL519 rather than the usual PL509.

Sets designed for a PL505/509 will function with a PL519, indeed the 519 was recommended for the dual std G6 chassis.

Cheers

 

Brian

August 9, 2017
6:20 pm
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Focusdiode said
I understand the Swedish K80 is a 110 degree model. I’d imagine they were imported into the UK as there was no UK equivalent at the time.

I read ‘elsewhere’ the K70 and K12 were imported here too.

There are more pictures of a K80 in Marcel’s Museum:

http://www.marcelstvmuseum.com…..%2001.html

It looks as if it has a DIN socket on the rear to attach an external speaker.

August 22, 2017
9:39 pm
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The_Teleman
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Hi guys , it’s been a long time since I’ve seen a K80 or a K70 come to think of it .

these in my opinion are one of the best quality sets Philips produced back then I had many ex rental sets on rental & also sold plenty too the loptx seemed mot be reliable but did occasionally fail , fault finding could be a bit of a headache at times but mot things seemed to be common when you got into them .

the sound quality was second to none at the time , customers liked the fact they had treble & bass tone controls something other sets didn’t have .

i will be watching this thread with great interest 

Chris

August 22, 2017
10:11 pm
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PYE625
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I’d kill for a nice example of a K70.

Beautiful sets.

Perhaps “kill” is an over-statement….laugh

Andrew.                                                                                   

                         

August 23, 2017
9:57 pm
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Katie_Bush
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PYE625 said
I’d kill for a nice example of a K70.

Beautiful sets.

Perhaps “kill” is an over-statement….laugh  

Hi Andrew,

You mean……….. You’d shoot a pigeon? Or something……..grin_gif

If at first you don't succeed, try a new fuse!

August 23, 2017
10:06 pm
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Katie_Bush said

Hi Andrew,

You mean……….. You’d shoot a pigeon? Or something……..grin_gif  

A clay pigeon perhaps. 

Andrew.                                                                                   

                         

August 23, 2017
10:13 pm
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Katie_Bush
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PYE625 said

A clay pigeon perhaps.   

rolf_gif

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