Hi Everyone,

I'm very new to the whole vintage televisions scene. Long story short, I have been looking for an early furniture piece colour TV for a long time and I happened to come across this HMV Consulate Colourmatic from around 1975 or 1976.

I picked it up off Gumtree.com.au from an older feller that claimed he built it himself around the time Colour TV first came out in Australia. Its rather a special piece as the original owner claimed it was built for a family member who never ended up wanting it so it has been sitting in a room unused fort over 40 years.

I managed to get it home in one piece, but when I turn it on the picture tube bows down and I get these strange horizontal lines through the picture.

Im hoping somebody here may be able to assist me in obtaining the schematics for the device or atleast point me in the right direction of somebody that may be able to assist in restoring it.

G'day Nicky, it is good see others having an interest in early Australian colour TV's.

The HMV Consulate 26" uses a C212 chassis. I do have the service manual, but unfortunately it is missing pages & only has one half of the schematic.

Fellow Vintage Radio member Ian Robertson might be able to assist you. In the meantime I'll ask around.

Hi Nicky

I don't have any colour schematics unfortunately.

The C212 that Labrat picked up from the Back in time for dinner exercise had a full schematic inside.

Post a picture of what you are seeing on the screen and/or email it to me.

Photos uploaded.

Nick, The lines you are seeing are called retrace lines.
Will see if I can find a circuit for this model.
But I would start with checking the rail that supplies the RGB cathode drives of the CRT.
Possibly low or unbypassed.
Or possibly someone has turned up the G2 volts too high.
Will get back when I’ve got a circuit and re-familiarise myself with this model.
Ian may know the answer immediately.
Or the EHT maybe high BEWARE.
JJ

Thanks Guys,

I managed to track down a old electronics repair guy close to me in Enmore NSW.

Funnily enough when I got the device to his workshop the retrace lines had disappeared, only leaving the bowing of the image (where the top half of the screen curves down)

The repair guy tried turning a few pots at the back of the screen to reverse the bowing but nothing seemed to make any difference.

Once we got the device back to my place the retrace lines had miraculously returned so this leads me to believe the issue may be a loose solder joint somewhere.

Finally the repair guy reduced the voltage to the tube down which reduced the lines to a point where they are barely noticeable.

This has now brought on a new issue where the volume can barely be heard.

I think you will find this unit due to its age will have many issues.
Not really a beginners project.
JJ

Haven't found the full schematic yet, but I did find a Video-Tronics service tips book with a section on the HMV C211 & C212 chassis. This has a list of faults & possible causes. I can make of a copy of these pages if you wish.

The C211 & C212 chassis are similar, the main difference being that the C211 uses a MSP (AWA) tuner & the C212 uses a Standard Components tuner. So unless you require info on the tuner a C211 schematic should suffice.

And just a disclaimer: I am not a technician, though I do have a tech school (TAFE) level of basic electronics. I am unable to offer much help apart from identifying models & supplying the service data.

Thank you very much MonochromeTV.

Any service documents you have would be greatly appreciated.

Could you please email them to the email address listed on my profile when you get a moment.

That chassis may be later than C211 /C212. CRT may be a 20AX, not delta.

Does it have the full-width convergence panel on the chassis with a large number of controls?

According to the manual (the part that I do have) the CRT is a A66-410X. This confirms with the Video-Tronics models/CRT list.

I'll post a pdf of the service tips here for the benefit of anyone following this thread.

Yes it does have a large convergence panel at the rear.

A big white unit with a bunch of dials for the RGB.

OK, looking at the yoke on the CRT.

Does it have three assemblies poking out the side in a Y shape? If so it will be obvious....

If no Y shape you have a 20AX type CRT. Philips refer to this as "self-converging". Errr, not quite....!

A schematic has turned up courtesy of fellow V-R member TV Collector.

pdf's pending.

Yes the A66-410x is a deltagun.

Pity in a way, the later chassis with the 20AX CRT was simpler, had many things fixed, the diabolical SCR hor deflection system was gone and the set was far more reliable.

Picture geometry and convergence was never great on the C211. And the power supply used to go bang regularly.