TV Zenith Solid-state 70's

[zeno]

Originally Posted by Marco-nix

that's why i can't see the complete image on the screen isn't it ?

If the caps go you may see the sides come in a little.
Usually the set will arc & cause other parts to fail.
Also when you turn on the set it will crackle loud like
popping bubble wrap.
Put up a screen shot next & then we can take the next step.

73 Zeno

[Marco-nix]

well, from what i hear, is the normal sound, no crackle sound except when i click OFF i can hear a pop sound... I have the image on the screen but not complete . I have a problem of vertical at the bottom of the screen.

[Marco-nix]

oups i forgot that i have no camera for taking fotos or video

[Jon A.]

First things first, that white cap must be changed. Mine has all of its original safety caps and I haven't risked powering it up since last May even though it was working fine. I have the replacements and will install them fairly soon when I get a good soldering station.

[Marco-nix]

Originally Posted by Jon A.

First things first, that white cap must be changed. Mine has all of its original safety caps and I haven't risked powering it up since last May even though it was working fine. I have the replacements and will install them fairly soon when I get a good soldering station.

I have no idea if it is a safety cap or a lytic.. but from what I see it's a big one. for a soldering gun, i paid 3 dollars for 2 guns. Models M030 - 30-35W.

[Findm-Keepm]

I've been following this thread for some time, and wondering why it remains in the wrong forum ......just wonderin'.....

[Jon A.]

Originally Posted by Marco-nix

I have no idea if it is a safety cap or a lytic.. but from what I see it's a big one. for a soldering gun, i paid 3 dollars for 2 guns. Models M030 - 30-35W.

I've never seen a white electrolytic capacitor. Bad white safety caps are marked 22-5001.

A cheap iron should be fine for this job due to the lack of delicate circuit traces in the area. As for me, I just don't want to drop extra funds on an iron I'll use only once.

Oh yeah, do *not* use acid-core solder.

[zeno]

We mostly used Weller irons, the style popular in the 70's on.
The high temp round tip was a dream on the Zenith terminal strips.
For soldering heavy things like the grounds on filter cans the
black gun was used. They must have sold 100 million of them.
We also had a bigger brown gun. That was good if you wanted to
solder two Buick Electra 225's together.
Temp controlled irons can be very touchy, follow any instructions
to the letter & they give good service. We tried other brands but
you got what you paid for.......

73 Zeno

[Findm-Keepm]

Originally Posted by zeno

We mostly used Weller irons, the style popular in the 70's on.
The high temp round tip was a dream on the Zenith terminal strips.
For soldering heavy things like the grounds on filter cans the
black gun was used. They must have sold 100 million of them.
We also had a bigger brown gun. That was good if you wanted to
solder two Buick Electra 225's together.
Temp controlled irons can be very touchy, follow any instructions
to the letter & they give good service. We tried other brands but
you got what you paid for.......

73 Zeno

8200 is the smaller two-wattage gun, and the D550 is the larger "solders anything" gun. #12 bare copper wire has made a tip or two for me over the years. I own two of both - one of each in the house, and one of each in the shop. Thrift stores around here used to sell 'em cheap before they started using ebay pricing. I spent around 30 bucks for all 4 - and that includes the original $22 for my first 8200 back in the late 70s...

Cheers,

[Jon A.]

Originally Posted by zeno

We also had a bigger brown gun. That was good if you wanted to
solder two Buick Electra 225's together.

Don't give me ideas...

Anyways, a Weller station is what I have been planning for. Fortunately I can actually get that locally.

[Electronic M]

Funny I picked up a 75W Weller at the hardware store last week. The only 'iron' they had cheaper was a 'wood burning kit' so I went with a gun. I have not used a soldering gun in ages (when I first started I had my grandpa's Weller which broke a long time ago), and it surprisingly was fairly natural. I like Irons, but the off the shelf stuff tends to die before the tip goes bad (usually about 1 years time). I've been running cheap used irons for the past ~7 years, but eventually they all wore out, and I needed a good one so I went with new.

I technically still have an iron....An ancient 75W cattle prod/night stick of an iron that would probably be able to join some Buicks (that Iron is reserved for chassis ground, and thick guage work). That iron makes my 75W Weller look like a 20W light weight (I'd guess the transformer inefficiency results in less of that power going in to heat than a resistive iron).

[Findm-Keepm]

Originally Posted by Jon A.

Don't give me ideas...

Anyways, a Weller station is what I have been planning for. Fortunately I can actually get that locally.

I used Weller's WTCPN stations for years, and had little problems, but in 2009, I got a Hakko 936 station, and have had ZERO problems. I like it so much, I popped for their 808 desoldering gun - best thing since my Pace MBT-100 I got in 1989, but that nearly bankrupted me. Hakko is good stuff! Sometimes MAT Electronics would have a special on them - I paid full price elsewhere, but give MAT a try..

Cheers,

[Jon A.]

Originally Posted by Findm-Keepm

I used Weller's WTCPN stations for years, and had little problems, but in 2009, I got a Hakko 936 station, and have had ZERO problems. I like it so much, I popped for their 808 desoldering gun - best thing since my Pace MBT-100 I got in 1989, but that nearly bankrupted me. Hakko is good stuff! Sometimes MAT Electronics would have a special on them - I paid full price elsewhere, but give MAT a try..

Cheers,

I'll check that out, thanks for the tip.

[Dreamsbeard]

Well, this flat chassis is now under my roof, and I have the firm intention to make it run good

First things first. I took a few pictures to put the safety caps issue to rest. At first glance I do not seem to see any, but I want to make sure.

As for the Tripler and focus divider, what do I have to look for before powering up the TV?

Thanks!

Edit : BTW, could any mod, move this thread in the SS forum?

[maxhifi]

I have had a Weller 35W iron since the early 1990s, have changed the tip at least 10 times, and it is great all around. I also have an 80W iron for big jobs. I have never had good luck with soldering guns, I had two of them when I first started out and never liked them. Maybe it's time to try again.

Note: attached is the style of Weller which lasts forever. The cheaper ones with
The screw in tips are not in the same league, I wouldnt expect it to last
Very long.