Are These Circuit Traces Bad

[TinCanAlley]

Originally Posted by DaveWM

I don't see any problem with using metal films in that location. Be aware that even new carbon comps can be way off spec, always best to test. Tube sets are a bit more tolerance specs. if its marked 5% you should check before it goes in.

Just a warning, changing those parts may have NO effect on the problem, but its the only thing that comes to mind when you talk about vert bars commonly described as jail bars. The scope would let you see it before and after (the blanking) and may be enough to tell if its the problem at all, but even that is not assured since the waveforms may not be very reliable.

If I were in your shoes I would just change it and see. keep the old parts if by some chance the replacements make things worse (I don't see it happening but never hurts).

good luck with it.

Okay, the diode arrived today as well as some 33Ks. The 100Ks should be here on Monday.

Since I was ordering NOS parts, I went down the list of transistors and ordered what they had so I could keep them on hand. I ordered some of the red, green and blue output transistors, but what I got doesn't match what's installed. What I have are what looks like round metal canisters with aluminum heat sinks and a plastic piece over the top to hold them and warn about the voltage. What I got as replacements are TO-202 types. These replacements might be functional replacements, but not physically. They obviously generate enough heat to need a sink, so these can't be installed or they'll overheat.

I'm attaching a pic and if you look to the right of the RGB outputs, you'll see the type of transistor they are.