So much easier to fix electronics stuff when the boards were single layer.

Back in the 70's, when in HS, took electronics classes. The first was just basic stuff. The second you got to make stuff. The most popular was intermittent wiper controllers for cars. The third and most advanced class was TV repair. There was this new TV out by Curtis Mathis that didn't have any TUBES!. it was all circuit boards. However, it was designed to replace circuit boards like you would replace tubes in the older TVs. The surprising thing was the circuit boards didn't cost much more than tubes. Especially since the Curtis Mathis TVs were the most expensive. Back then you could get tubes at 7-11 convenience stores.

Used to have a tube tester and a oscilloscope. The main tube in the oscilloscope died and the there was no tubes to test so chunked em. About all I did with the oscilloscope was use it for a GIANT multi-meter. I still have an use my old Simpson analog multi-meter, it about the size of a lunch box. Haven't joined the digital multimeter age since all I ever check with it is to see if my car battery is charging or if I have continuity somewhere.

Morning Y'all
I remember there were tube testers almost everywhere, and people with a paper sack with the tubes from their tv testing all of them so they could get it fixed in one shot.

Without a schematic and test equipment, troubleshooting that is gonna be tough. Playing Captain Obvious...that filter R241(A-D), C241 looks like hammered crap. Those parts look like they should've been able to handle quite a bit of power. Now, I', not so sure. The circuit board is really burned. How many layers is it? If it's just a 2-layer board (probably is), you should be able to repair it. I can't say what else might be toast based on pictures.

I remember several times I went to girls houses that I was dating and their TV was messed up. Yanked the back off the tv, popped out a couple of tubes, trip to 7-11, pop in the new one(s), and it was fixed. Because of the electronics class I knew which tube or tubes to replace so only had to take one or two instead of a whole paper sack full.

The parents would always ask me about fixing all the other broken electrical devices they had. Sure glad nobody had computers back then.

One time I was mowing this old guy's yard. He had suffered a stroke, couldn't talk, and had a nurse taking care of him. Went in to get a drink of water. He was in a wheel chair parked in front of tv that was messed up. I fixed the TV and he smiled. Either he liked me fixing it for him, or he had gas, I don't know which, but I felt great none-the-less.

Good M morning.

Richard, it was probably gas. Unless you happened to turn it to a channel he wanted to see.

Think he was happy to not see snow with zig zag lines through it.

I bought one of the Curtis Mathis TVs with no tubes and the replaceable circuit boards sales pitch. 10 years later when the TV has some issues I looked around for any Curtis Mathis dealers and they were just gone. And no one had a source for the boards. It was a good idea but the idea did not work out. That was back in the olden days when "stuff" was made in America or Japan and good quality. Heck I still have the monitor for my Commodore 64 out in my garage as a TV. It works great and it is at least 30 years old.

Good Monday morning folks.

About that time in the TV world I bought a Toshiba with the black stripe screen. It was almost as good as the Sony trinitrons and a whole lot cheaper. It lasted 20 years before It finally went died. Replaced it with a big Sony Wega, which only lasted 15 years. Then got a used Mitsubishi Rear projection, only lasted a couple of year per projection bulb so when I got laid up, bought a really expensive 65" Sony Bravia LED, everyone says it's the clearest TV theyve seen.

Happy Monday http://forums.pelicanparts.com/support/smileys/ar15.gifhttp://forums.pelicanparts.com/support/smileys/uzi.gif

the pelican is a bit slow today.

Morning all, not working today, well working from home. David has his practical driving test today, at 12 so just can't be stuffed going in today. Too much jacking around, so just not going. Simple day now :)

It is just amazing what HDTV shows. We had a 40 inch TV tube Sony that was as good as any standard def TV could be. Watching F1 we could hear the announcers talk abould seeing a flat spot on the tires or other detail that just was not there for us. Now at full HD on the big screen we can clearly see that flat spot of the tires.

It is just scary how much makeup the national news anchors wear. Scott Pelley of the CBS news has family in Oklahoma. The local TV station met him at the airport and asked him some questions. What a difference in appearance. I will say he has lots of "character" in his face. :eek:

^^Oh yea. We have a big boy HD flat screen and watching Pixar movies on it is unreal. There are so many details you'd never seen until viewing in HD.

P
Looks like you soldered the resistors together on both sides. If that is the case, you need to separate them.

I think in the original layout, the resistors were all in parallel. So, he should be good.

Morning all. My Monday started yesterday. start the car bing "check charging system" so fire drill to the other car to make lunch for mothers day with the family. Drove the car to get fixed this am, all of about two miles. coasted to s dead stop in the parking lot. Anyone seen my wallet?

One advantage of 1980s cars is there is no "check charging system" except a voltage meter in the dashboard. My 911 did not have one originally but I had one added to my Tach so I know the voltage now.

I can change the alternator in the Elky in 20 minutes. The 911 is a bit more involved. :p

Hopefully your car is not one like so many modern cars with the alternator under the intake manifold or some other hard to get to place.

Maybe there is info I missed, but off the top of my head, I cannot imagine why you would put 4 small resistors in parallel...except nabe for cooling...but then, I would just use a single heat sinked one in a metal case...unless that was just cost prohibitive.

It's $40 to have my car ride the flat bed tow truck to the mechanic from my house.