This is the first 801 I am working on out of a Lunar Lander. It's on loan to our Arcade if I can get it fixed. The fuses at F100 and F101 were blown when I got it so I decided to do a cap kit and check the bottle cap transistors first before I just put the fuses back in and powered it up. After I finished, powered it up and F101 blew instantly. I checked the bridge rectifier at DB100, after seeing a post about it and watching dokert's video on testing one to make sure I was doing it right, and there is a short in one of the directions. So my main question is:
Would something else cause the bridge rectifier to go that I should look at too, or is it usually the culprit?
Also the curiosities. The cap at C506. The kit and everywhere I look it up, people say it should be 45uf-47uf. The markings on the side of this old one says 45MF. Which my Asteroids has as well. What's the reason for the difference or is there one?
The other thing is someone had repaired this in the past at some point or attempted to and the transistors at Q704 and Q604 should be U57. These are JE253 with their legs crossed. Is this acceptable and that's all they had at the time or should I just replace them with U57?
Thanks for the help.
Would something else cause the bridge rectifier to go that I should look at too, or is it usually the culprit?
Also the curiosities. The cap at C506. The kit and everywhere I look it up, people say it should be 45uf-47uf. The markings on the side of this old one says 45MF. Which my Asteroids has as well. What's the reason for the difference or is there one?
The other thing is someone had repaired this in the past at some point or attempted to and the transistors at Q704 and Q604 should be U57. These are JE253 with their legs crossed. Is this acceptable and that's all they had at the time or should I just replace them with U57?
Thanks for the help.
