1949 Philips tv
 

I came across this set, and can't seem to find much info on it. The ad claims it's a 1949 model DV1050. Philips. The Early Television Foundation does not show this particular model.
Tony

Kinda shaped like an Emerson. Others with much more information will probably know. Stand by...

It's Canadian. It doesn't look exactly like anything else from the time, and doesn't resemble the European Philips sets from that period either. Philips didn't sell TVs in the US during that time period, so this would have been a Canadian one-off. Curious!

TV broadcasts didn't start until about 1952 in Canada so I think the 1949 claim may be bogus.

ETA there's a guy on ARF who has a bunch of Canadian service data from this era, you might reach out to him.

The 25 Hz spec on the tag on the rear definitely points toward Canada. It will also have a huge power transformer due to the 25 Hz spec. The presence of a CSA registration and no UL rating point toward Canada

There were/are lots of Canadian cities/towns close enough to the US border that they can pick up stations from the states. There were plenty of Canadians that had TVs before their country had stations...There are also a number of 1954-1960 Canadian made color TVs that predate Canadian color casting for the same reason.

I watched "The Beverly Hillbillies" with a dubbed French soundtrack when visiting up by the border many years ago. Never saw anything funnier in my life!

I agree with e/m...I think that the set looks "earlier" than 1952 when TV broadcasting started in Canada. I believe 1949 is accurate. Wonder if it had a hot tuner and extra IF stages to aid dxing US stations.
Did Phillips have a radio factory in Canada prior to 1949? :scratch2:

jr

While I agree the TV looks older than 1952, I have a hard time believing that Philips invested in designing, building a factory, building sets, and selling them in a market where the only signals were from across the border and there were no regulations in place.

If they were already selling radios all they would have had to do is come up with a TV chassis design and tell production to build it...Just like any other established radio maker post-WWII would.

I just found the ad for this TV on Kijiji which appears the be a Canadian version of Craig’s list. The set is in Cambridge, Ontario which isn’t too far from Niagra Falls where there was 25Hz power.

The set has a bright horizontal line so the HV works and the CRT isn’t completely dead

I hope they haven't left it running like that for long...

https://i.ebayimg.com/00/s/MTIwMFgxN...btYZ6/$_59.JPG

https://www.kijiji.ca/v-electronics/...ationFlag=true

.

Regarding the "line on the screen". I looked real close at the picture tube and there is no burn mark. Also, the seller told me he didn't have it on very long to test. Just a basic power up.
I'm beginning to think that Electrohome might have built this set. Either that or Westinghouse. They had a plant in Hamilton.
Tony

Philips bought Rogers Majestic and the Philips sets were also badged Rogers Majestic.

The first station received in Toronto was WBEN 4 now WIVB which began broadcasting in the fall of 1948. My parents in Toronto bought a Philips 17" set in 1951 prior to CBLT's start in September 1952.

I have the original service information for these sets in storage. Please be patient as I locate it. Otherwise I believe it is listed under Rogers Majestic in RCC 1 notes.

Incidentally I have a Montreal manufactured RCA Victor 8T243 from 1949. I believe it was the first set manufactured in Canada. The Philips set depicted I believe is from 1950.

Southern Ontario including Toronto and Cambridge was 25Hz until 1958.

I believe this was a hot chassis and did not employ a power transformer.

Penthode, Well it looks like you nailed it. I pulled the back off, stamped on the cabinet is 50-10-05. Also, I wondered why it was so light. I could actually pick it up by myself without breaking my back. No transformer, lots of electrolytic cans, large power resistor and 3 stages of selenium diodes. The chassis is nicely spread out and connected by plugs and sockets. Also, nice and clean with no rust. There is no cage around the flyback and H.V. circuit, which is about an inch away from the speaker. The 10BP4 picture tube tests good. Looks like 26 tubes total including the picture tube. 3 6J6's for the tuner. Sadly,... no photo's until my wife tells me where she hid the camera.
Tony

So you acquired the set? If so great!

Please keep us posted on this. It is an I interesting set.

So, how different is this model than say the European Philips models? I would have figured they would have taken an existing chassis and modified it to suit the power and receiving needs for Canada. Or, was it more economical to design something from scratch?

Cambridge, huh?
Long shot here but are there any marks indicating if/where the last time this set was serviced?

They probably based the set on an existing north american design rather than grabbing something from europe and re-engineering it to handle NTSC.

Looking underneath the chassis shows almost no servicing in the past. The cabinet was designed so the chassis could be slid out the back without removing the knobs. The front bezel is a "split" design to go in behind the knobs once the chassis is installed. I tried to remove the inner knobs with the chassis still in the cabinet. There are actually set screws installed on the inner knobs. So,.. until you remove the bezel, remove the chassis and slide the outer knobs back toward the chassis you would never see the grub screws. I thought, oh great more seized knobs ! Here are some photo's.

Looks mighty clean!

When you get a schematic, please post it. This is one amazing set.

Looking closely at the photos, it appears that there is a soldered connection on the top of all of the electrolytic cans. Is this the negative connection for the capacitors inside the can?

I was provided the full service information volume for all early Canadian Philips/ Rogers televisions by Mr Earl Ryder of Ryders TV service in Georgetown Ontario in 1971. I still have it in a box in storage. I will look for it but it will be a few months before I may find it.

In the meantime, the Toronto Reference Library located just north of Bloor Street on Yonge used to keep a copy of it.

I wouldn't count on any library retaining such docs indefinitely. My regional library used to have a complete set of Riders TV manuals, as well as a subscription to Sams allowing me to download any Sams manual free.

They discontinued the Sams subscription last year because the demand was insufficient to justify the expense.

A couple of months ago I went there to photocopy something from Riders and they told me they had disposed of that whole set, too. To quote the librarian, "You might be the only person who looked at that set in the last decade."

In a library, space costs money.

Phil Nelson
Phil's Old Radios
https://antiqueradio.org/index.html

Seeing selenium rectifiers and a rather small transformer (probably just for tube heaters) I'd agree.

I recall the filaments were series strung negating the need even for a filament transformer. If the horizontal output is a 19BG6, that would clinch it.

You may be right, Phil. I haven't been to the reference library for over a decade and the service data may have been disposed of. I am curious to check.

The problem is the unique Canadian service data and where to find it.

I was actually quite lucky the other day. I was searching E-Bay and came across an original Rogers-Majestic / Philips service manual #1 for years 1948-1952. The seller said it has the DV1050 in it. Hopefully it should arrive by the end of the week. Also, the price was right.
Tony

The manual you found is exactly the same as the one given to me in 1971!

I finally got the manual in my hands. I've scanned only the schematic into pdf format so far. It is too large to post here. I think if I try to reduce the resolution to post it, it will probably be unreadable. Anyway, there are 3 selenium rectifiers in the power supply labeled X1,X2, X3. The only reference to them in the parts list is Part-No 130-044 rated at 400 mA. Is there a suitable silicon diode that I can use to replace them, when I am doing a re-cap on the set ? I am familiar with the voltage increase using a silicon replacement. Do I need to use a resistor in series with them to drop the voltage back to what the selenium part would produce ? The only other "modern" components in the set is a pair of matched IN34 Germanium Diodes in the Phase Discriminator (Horizontal Oscillator) sync circuit.
Tony

Hi Tony.i send all the Canadian data I scan to Steve Mcvoys early tv museum site and he archives them in good resolution for all to see.that way,you can post a link on this forum for members to download and view the schematic as well. A great service.if interested,here is his link.
http://www.earlytelevision.org/tv_sc...ams_b-c-d.html. RonL

Ron, I was able to scan the entire manual (into individual sections) and send them to Steve at earlytelevsion.org so hopefully he will make it available to everyone.
Tony

I just checked the earlytelevision.org web site and Steve was kind enough to post the service data for the various models in the manual. Under Rogers Philips Canadian.
Thank-you Steve
http://www.earlytelevision.org/tv_sc...iagrams_r.html
Tony

Great that you shared your data on Steve's site Tony.that way anybody can find it now.i send whatever I scan for members here and arf to Steve as well. Good luck with that set. RonL

Well, I finally got the time to remove the picture tube and take some photo's of the bottom. I was surprised to see that the electrolytics are the type that have a nut on the bottom to secure them. It should make restuffing them much more easy going than having to deal with the "twist" tab style. Also the 6 caps that are in the middle of the 2 chassis halves can be unplugged, unscrewed and worked on as a sub section. The yolk itself has it's own plug and can be removed without having to desolder wires.
Tony

Can someone tell me if it is ok to replace a 1000 mmf @500V -CERAMIC- cap with a mica of the same value ? As for the application, it is C49 in the schematic here: (page 21 of the pdf or page 20 of the manual itself).
http://www.earlytelevision.org/pdf/r..._dv1050_tv.pdf
It is located between the Video output of the 6V6 V10 (pin 3) and (pin 1) of the 6AU6 V11. The one leg has broken off. I spotted it while I have been gutting the electrolytic cans to re-stuff. I did not break it, as it is buried too deep in the chassis to get damaged.
I am also wondering about the best way to go about doing the ground connection with this style of electrolytic cap (they are all dual style). Both "positive" leads come out the center and the ground is only "friction" between the base of the can and chassis. This being a "hot" chassis of all the "cans" only 4 of them actually are insulated from the chassis. The rest are all grounded to the chassis. I thought about maybe drilling a small hole close to the outer area and using "desoldering braid" (copper) to make a friction ground like original. I'd prefer a soldered connection, but there are a lot of wires in the way, on a lot of the "cans". This style using the "nut" to tighten makes it a little more challenging to run the third wire for the negative side. It would be a lot easier if you could solder to aluminum. I will probably have to use the new "skinny" style Nichicons, as the caps I have are too large to fit back in the original cans. I know Bob A. did a video on them, so I'll have to do a search on that style. As a "plus" they are also rated at much longer hours.
I'm also using 2/56 bolts and nuts in place of the original aluminum press pins that secured the "solder lugs" on these caps.
Tony