1960's NZ Murphy Television.

[Sandy G]

Awrite !! Lookin' GOOD, Glen !

[Glenz75]

Thanks Sandy Hopefully it'll look even better when I'm done fixing it....
My backlog of TV's in the collection that need looking at/repairing would be at least 20, so have heaps to keep me busy!

[Komet]

Great work Glen!

[Sandy G]

Originally Posted by Glenz75

Thanks Sandy Hopefully it'll look even better when I'm done fixing it....
My backlog of TV's in the collection that need looking at/repairing would be at least 20, so have heaps to keep me busy!

Well, its the middle of y'all's Winter, might as well have SOMETHING to do...Idle hands/Devil's workshop 'n' all, y'know...(grin)

[Glenz75]

Thanks Komet

Sandy - Yep it sure is the middle of winter here...haven't seen the sun for a while now! Yes plenty of TVs to keep me busy - but - have 2 small kiddies and wifey so plenty there to keep me occupied as well! I do manage to find a 'window' for old TV tinkering though. Cheers Glen.

[Sandy G]

I HOPE Mrs. Glen is a GOOD, UNDERSTANDIN' soul, & keeps the Ka-Diddles away from Dad's TV Repair Emporium...Kidz 'n' Old Lectronix-NOT a particularly good mix...Give her a Big, Regulation, East-Tennessee Bear-Type Hug for me, willya ?!? (grin)

[Glenz75]

Well, this set is finally done! All cleaned up cabinet wise, fully re-capped and almost re-resistored too. The resistors that were in this were off and some of them had even drifted oddly enough to the next preferred value, which made me wonder if they were incorrectly marked while being manufactured...who knows? But at least they're out of there and won't cause any further problems.

The restoration took longer than expected, I just kept plugging away at it slowly so rather relieved that its come to an end.

But... I did have a couple of problems along the way...The first was intermittent hum bars that would come and go at will, at the time I thought it was just some of the old caps that were still in place, but after replacing all them and the rectifier diodes the hum bars were still there.

Scoping the B+ rails one of them clearly showed this 'blip' of noise moving along in time with the hum bar on the screen.

My next thought turned to the valves, thinking that maybe one of them had an internal short possibly due to the filament supply leaking AC across internally to somewhere it shouldn't be. As it turned out I found 'several' of them with multiple shorts the 6EB8 video output tube being the worst!
Once I replaced the bad tubes and powered on again, the hum bars had vanished!

The next problem was towards the end of wrapping this up, I went through all the adjustments including the horizontal oscillator. Got that all done, had the picture all centered and locked nicely, powered the set on the next night from cold and found the sync to be way off.

After about 30 seconds it popped back but the picture was way off to one side and I could see it slowly creeping back into line, after about 5 minutes it was normal again.

My thoughts about this turned to one of two things, faulty mica caps in the circuit as there were a couple and there was one in series with the hold control and the grid of the 6CG7 or the valve itself.

I changed that mica cap as it was well below its value of 330pf, this didn't really improve things so popped in another 6CG7 and problem solved!
So much for the original valve testing OK! I think in future I'll have some good know substitute ones handy for future niggly things like this.

So now its all back together and running very well, despite the CRT being on the weak side it still gives a very nice picture.

This is the first time I have overhauled this particular model and have to say the contrast and definition is really good. I guess a good circuit design plays a part in this as well. If the picture tube was good the results would stunning I bet.

The End! . Some final pictures below. Thanks for following this restoration.

Cheers, all the best for the festive season.

Glen.

[magnasonic66]

Great save on that Murphy consolette Glen! I went through the Murphy site, what a fantastic looking lot of sets, if I ever find a Murphy anything in this country, I'll buy it!

[KentTeffeteller]

The Rank in Rank, Bush, Murphy is related to Rank Arena.

[Einar72]

Originally Posted by Glenz75

Thanks Komet

Sandy - Yep it sure is the middle of winter here...haven't seen the sun for a while now! Yes plenty of TVs to keep me busy - but - have 2 small kiddies and wifey so plenty there to keep me occupied as well! I do manage to find a 'window' for old TV tinkering though. Cheers Glen.

Great job on the Murphy, Glen! Got any Ultras out your way? BTW, I assume you were pulling Sandy's leg - enjoy that 8:44 PM sunset tonight! I've owned a copy of the Kinks' Arthur since 1970, where they sing "We'll fly down to Sydney for a holiday on sunny Christmas day".