Philco TA505 TV

[DavGoodlin]

Based on the tubes listed, it resembles a typical 1956 or 1957 Philco BW using a transformer. Chassis is TV-330 or 7L41.

That is such a neat piece, but you may need to restuff all those caps to keep it looking original.

[bandersen]

Ah, Dave beat me to it. Interesting to see how their design evolved over time.

[old_coot88]

Originally Posted by init4fun

I wonder if the empty 7 pin on the audio module might be a 6AV6 (or 6AT6) ?

Maybe I'm dreamin', but didn't Philco use a 6BN6 gated-beam tube at some point? Try a I might, I couldn't spot the empty 7 pin socket (or the buzz control pot that would accompany it).

[Dave A]

Did Philco have a Canada division of some sort? Curious as this is built in Canada and found in Canada. Enquiring minds want to know. And I would like to hear the discovery story.

[Gregb]

Originally Posted by Dave A

Did Philco have a Canada division of some sort? Curious as this is built in Canada and found in Canada. Enquiring minds want to know. And I would like to hear the discovery story.

Yes there was a Canadian Philco, located in Toronto Ontario.

It was listed for sale on Kijji in Calgary, my daughter lives there and between my wife and her they got it for me, paid $80 for it.

[Gregb]

Originally Posted by old_coot88

Maybe I'm dreamin', but didn't Philco use a 6BN6 gated-beam tube at some point? Try a I might, I couldn't spot the empty 7 pin socket (or the buzz control pot that would accompany it).

When looking at the front picture, third module down on the left side, brown 7 pin socket with a control directly below the socket.

[Gregb]

Originally Posted by DavGoodlin

Based on the tubes listed, it resembles a typical 1956 or 1957 Philco BW using a transformer. Chassis is TV-330 or 7L41.

That is such a neat piece, but you may need to restuff all those caps to keep it looking original.

Thanks, I will have a look

[old_coot88]

Originally Posted by Gregb

When looking at the front picture, third module down on the left side, brown 7 pin socket with a control directly below the socket.

Oho! Got it. Goin' blind in one eye and can't see outa the other.

[Gregb]

Originally Posted by old_coot88

Oho! Got it. Goin' blind in one eye and can't see outa the other.

I had a close look at how the socket is wired and it looks like a 6AB4 should go there as well as the socket above it. First one being an amp and second a phase inverter for the pp 6AQ5 output stage.

I think later today I am going bring it up very slowly on my PR57 and see what happens. All of the tubes are Philco branded and tested good as new other than the missing one and the horizontal output, it had been changed. I am still planning to recap the power supply and I just noticed the fusistor is missing.

[Gregb]

I chickened out and did not power it up, pulled the power supply and checked the caps two of them are shorted. Good thing I decided to check first. I will re-stuff the old cans and report back when completed.

[timmy]

Can’t let those power supply caps go it’s safer to change them rather then chance burning up the power transformer.

[Gregb]

I have re-capped the power supply, re-stuffed the cans that were there. Two were Philco brand one was Aerovox so maybe a past replacement. Thought I should check the fuse and the holder was broken so replaced that. Had a five amp fuse in it, thought that was a little high so installed a three amp.

Brought it up slowly on PR57 and I have sound and a full raster but no picture, sorry my picture does not show it but it is full. The tuner is really flaky so will pull that next and go through it.

[timmy]

If any wax caps say goodbye to them

[Gregb]

Went through the tuner and the vertical/horizontal control modules and I now have a picture. At first there was no sync but I found an open jumper that looked on purpose, maybe the last teaching fault before the unit was retired. I have attached a couple pictures, sorry they are not the best. I can't seem to get a good picture of a crt image.

[timmy]

That’s a huge start it’s getting there.