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Old 20th Sep 2006, 9:36 pm   #1
Focus Diode
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Default Philips G6 Hybrid Colour Sets

Many thanks for all your kind comments in the "Tripler Conversion" thread. Thought I'd start this new thread as the subject was becoming off topic.

Good luck with the restoration Welsh Anorak! My 502 was obtained in 1992 as complete scrap. Indeed the previous owner was surprised I got it going! Fortunately I had a scrap chassis to hand with a good LOPT in it.

Its history was it was used until 1975 until the LOPT failed, then it was abandoned until I got the set. You can imagine the state it was in! I reckon the LOPT had failed due to the system switch top link being removed at the solenoid. Over a period the sliders on the Line Output transformer panel shorted out, causing a burn up. Thankfully the sliders were intact on the scrap chassis so a transplant job was required.

This is worth bearing in mind. Due to slider misalignment during restoration I had unlocked 625 horizontal hold on changing systems. The boost voltage rose to some 800V! If this ever happens switch off at once and check system switch alignment to avoid a LOPT failiure.

Boost voltage- I had excellent results with 625 at 550V, 405 at 530V which is a far cry from the 600V/570V given in the manual.

I never found the legs for the 502, just as well in a way as woodworm was evident on getting the set!

Yep, there are striations evident on 405-lines. Probably is the 1K5 405 damping resistor but could also be caused by the 3rd harmonic tuning coils.

Cheers,
Brian
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Old 21st Sep 2006, 9:45 pm   #2
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Default Re: Philips G6 Hybrid Colour Sets

Hi, don't know the 501 ,what's it look like? I still think there was a 26" G6 single standard. I'm sure I saw one in our local Visionhire in the early 70s. Unless I've dreamt it!
Regards GP .

Last edited by Mike Phelan; 7th Dec 2007 at 5:09 pm. Reason: S&P
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Old 22nd Sep 2006, 8:25 am   #3
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Default Re: Philips G6 Hybrid Colour Sets

From the number, 501 sounds like a dual standard G6. There was a 26" s/std G6 - the G26K513, if I recall it correctly.
It had the square on-off switch, three knobs (V, B & C) and four pushbuttons all in a panel in the centre on the right, between speaker and convergence panel.
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Old 22nd Sep 2006, 5:23 pm   #4
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Default Re: Philips G6 Hybrid Colour Sets

As Mike says the G25K501 is one of the original dual standard G6 models. It came out at the same time as the 500, 502, Alba TC 1525 and Stella ST 2500 versions.

According to the manual the 501 had a, "Period furniture-styled cabinet with full tambour doors, using Honduras mahogany veneers with period 'scrolls' and embellishments". Wow! Sounds nice!

Like the 502 and Stella version the convergence box and speaker are in a drawer below the screen which can be pulled out for adjustment purposes.

Cheers,
Brian
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Old 22nd Sep 2006, 8:48 pm   #5
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Default Re: Philips G6 Hybrid Colour Sets

Hi there
The 501 was indeed a big piece of furniture with doors and gold attachments. Finding one is difficult as I've come across several that were converted to the dreaded 'cocktail cabinet' or used as a cabinet for a later set. Mind you, picking one up was a bit of a feat!
And yes, there was a G26K513.
Nice to see all the old G6s working still - must get going again on mine.

Glyn
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Old 22nd Sep 2006, 10:18 pm   #6
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Default Re: Philips G6 Hybrid Colour Sets

Hi Glyn i knew that i had seen a 26" G6 before . Word has it that there was a 22" dual standard . The cabinet was like the G25K500 . Wonder if anybody has any pictures of the set ? . Haven"t had time to fit the style 70 lopt yet . I will next week . Regards GP.
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Old 22nd Sep 2006, 10:25 pm   #7
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Default Re: Philips G6 Hybrid Colour Sets

Hi - yes the G22K503. Cabinet and controls were like the later 500s (no meter, colour on/off or tone switches) but the colour and finish were the same as the 511s - i.e.dark veneer.
I've only ever seen one, now long gone, and no pictures, I'm afraid.
Good luck with the LOPT!
Glyn
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Old 22nd Sep 2006, 11:37 pm   #8
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Default Re: Philips G6 Hybrid Colour Sets

Here's a picture of the later version of the G6 without the extra buttons or the tuning indicator. Does anyone remember the little silver sleeve that came with the sets to assist with tuning when the button was pushed in?

Mike.
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Old 23rd Sep 2006, 4:51 pm   #9
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Default Re: Philips G6 Hybrid Colour Sets

Hi all,

All your contributions and photos are fantastic!

As for earlier/later versions I was put in touch with a Midlands based enthusiat who had a later 502 model, spot the differences between his later version and my late 1967 model. With the later version the lower speaker looks like it has a cloth finish, in addition to the usual loss of colour off, tone and tuning meter.

If he's on this site by any chance I hope you don't mind me submitting your photo. The experiments you did winding your own EHT overwind would make very interesting reading!

Cheers,
Brian

The photo of the later set was taken in 1992
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Old 27th Sep 2006, 9:28 am   #10
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Default Re: Philips G6 Hybrid Colour Sets

Quote:
Originally Posted by Mikey405 View Post
Does anyone remember the little silver sleeve that came with the sets to assist with tuning when the button was pushed in?
I know of a Stella ST2500 version which has this silver sleeve intact.

Cheers,
Brian
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Old 29th Sep 2006, 9:07 am   #11
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Default Re: Philips G6 Hybrid Colour Sets

More variations of the G6, sorry for the quality of some of the pictures. Again the later 502 version differs between my d/s and the later version!

Brian
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Old 2nd Dec 2006, 11:01 am   #12
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Default Re: Philips G6 Hybrid Colour Sets

My G25K502 celebrates its 29th birthday on 21-12-06 (it's datestamped 21 DEC 1967).

In view of the ailing CVC5 and problems with the modern Goodmans set, surely it's crying out for full domestic service? Here's the set working yesterday with Mikey's excellent DVD on screen.

I've mentioned before about the good overwind. I'll in due coursse fit this to the set but will take photos of the tripler conversion in the relevant thread before hand.

Brian R
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Old 2nd Dec 2006, 7:49 pm   #13
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Default Re: Philips G6 Hybrid Colour Sets

Quote:
Originally Posted by Focus Diode View Post
My G25K502 celebrates its 29th birthday on 21-12-06 (it's datestamped 21 DEC 1967)
Oh dear! That should be 39th of course!

Brian
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Old 1st Jan 2007, 6:18 pm   #14
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Default Re: Philips G6 Hybrid Colour Sets

Hi Chaps

In an attempt to keep this subject alive I have been keen to document the technical history of the Philips G series (G6/8/11 etc) chassis for a long time. I would like to create a memorial to what I believe was a significant engineering development. One that has always lit a small part of my memory and imagination up very brightly.

I know this all sounds a bit odd but I remember ‘small bits’ about the G series sets from when I was a young lad working in a TV repair shop in Coventry in the early 1970s.

A few (of the thousands) of the questions I would love to know answers too are:

Who exactly designed the sets and when?
What technology was used (valve/transistor/hybrid/IC etc)?
How much did the sets cost new and for how long were they in production?
Is there any scanned marketing material from the period available to reference?

I would appreciate anyone who can help me with info on the G sets to contact me here.

Regards

Robert
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Old 2nd Feb 2007, 9:37 am   #15
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Default Re: Philips G6 Hybrid Colour Sets

Hi Robert, Thanks for your contribution and sorry it's taken so long to respond.

As far as I know, "G" sets were designed at Philips in Croydon. Sets starting with "K" were made and designed on the continent, eg: the Swedish K70 series.

The G6 was apparently Philips 6th CTV development, obviously unless others know better earlier sets such as the K4 (see Mikey405's excellent site) were experimental.

The G6 was in production from 1967 to 1970 in its various forms. The G8 I believe 1970-1977 and the G11 1977-1979.

Others please feel free to correct me and/or add to the above information.

Here's a fascinating look at the G6 in production, taken from Practical Television June 1967. Due to file limitations I've had to do both pages seperately.

Cheers,
Brian R
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Old 2nd Feb 2007, 11:12 am   #16
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Default Re: Philips G6 Hybrid Colour Sets

The G6 and the G8 were icons of the dawn of the colour age........................two superb sets with great pictures( I own both!!), I think that BRC etc. were , although the sets were expensive, going down the "cheap as chips" route of design/build etc. that ruined our industry.........................by the mid 70s, sets from Grundig, Philips etc. ran rings round ours, and still crop up today.................ianj

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Old 2nd Feb 2007, 1:20 pm   #17
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Default Re: Philips G6 Hybrid Colour Sets

Robert
I missed your post as well.
To add to the replies, there was also the G9 - a 110 degree version of the G8, and before the G11.
Hybrid - G6, K70, K80
Transistor and IC - G8, G9, G11, K9.

As well as the Gxxx and Kxxx model numbers, the (Swedish?) K9 had A26Kxxx and A22Kxxx model numbers.

These were all good sets of the era when repaired properly, compared to some of, but not all, the other British offerings. The continentals soon overtook us.

Later G8 and G9 did have a lot of silly faults not because of the chassis, but the G11 redressed the balance.
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Old 2nd Feb 2007, 1:53 pm   #18
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Default Re: Philips G6 Hybrid Colour Sets

I love my G6 dearly - but have to smile at the comment from Practical Television posted by Focus Diode (and thanks for sharing the scan!):

"As can be seen, the designers of these set have had the service-man in mind, for everything is easy to get at."

Hmm... I not sure I'm in agreement with that! Maybe my hands are just too big!
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Old 7th Mar 2007, 9:08 pm   #19
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Default Re: Philips G6 Hybrid Colour Sets

A shot of the G25K502 showing the line output stage rebuild. Note the EY87 Focus Diode!

Cheers,
Brian R
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