Help w/ ID of component on G07 CB0

[bitsweep]

Folks,

I picked up a horrifically water damaged Rally-X machine for $20, and have gutted it for parts.  Actually, I'm convinced it was not merely water damaged, but actually frickin' submerged for a while, and then left out in the snow just to be sure everything swelled up and died.  At some point a group of deranged mice wee-wee'd on the dang thing, apparently just to make sure it REALLY smelled bad.  It is in such terrible shape, I've nicknamed this endeavor "The Raggy-X Project".  You'll note that even the Rally-X cartoon car-dude seems pissed off at his mistreatment.  Rally-X was never a great game, but it certainly deserved better treatment than this.

I may post pics on the full disassembly, cleaning, and re-purposing of parts if anyone cares to point me to the proper forum for that sort of thing.  (I warn you though, the full picture set is a little like watching a horrific train wreck.  In slow motion.)  For now I've just attached a few photos to give you the idea.  I will certainly get my money out of the bits and pieces after a goodly amount elbow grease and much sanding, cleaning, polishing, painting, re-greasing, re-purposing, etc.  Plus I enjoy the hobby, which is really the whole point after all.

But that's never enough--I am really feeling saucy--I'd like to try and salvage the Electrohome G07 CBO.  The tube has got a goodly amount of burn, but I've seen worse, and the dark plexi taped to the front of the plastic bezel can hide a multitude of sins.  However, as you can see from the other pics, an initial inspection of the chassis reveals a pretty horrifying state of affairs.  I've fixed many monitors and TV's, some were truly awful, but none that were this far gone.

But now, to my question:
I've only just begun perusing a couple different PDF copies of the service-manual/schematics, and cannot find a part-listing or description for the component you see in the last picture--T503.  It's that thing lurking ominously next to the flyback, scarily encrusted with fuzz and fur and Lord knows what.  Anyone have any suggestions for where I can find the electrical specs for this part?  I can't find it in any of the various PDF's I've downloaded--perhaps my Google-Fu is weak.

Thanks,
-S

[Kevin Mullins]

T503.  It's that thing lurking ominously next to the flyback, scarily encrusted with fuzz and fur and Lord knows what.  

They always look like that. 
Clean it off along with the rest of the chassis and let it be.

[bitsweep]

They always look like that. 
Clean it off along with the rest of the chassis and let it be.

(Okay, deep breath...
Please believe me when I say that I am not trying to sound like a jerk--but despite my best effort, I probably am going to sound like a jerk.  So here goes.)

First, I do appreciate that people want to respond and help.  But... these kinds of "non answers" are exceedingly unhelpful.  Let me be clear about a few things:

(1) I did not ask if I should mess with it.  I specifically asked if anyone could point me to a part description, part spec, or other reference for that T503 transformer.

(2) Components do not "always look like that", nor should they.  EVER.  If they do, then the equipment is years overdue for cleaning and preventive maintenance, and frankly deserves to fail.  And it likely will fail, catastrophically, even if "cleaned up".  The fun part is that it's never a one-point failure either.  The mis-directed electricity happily strains components until they go out of tolerance, or it just goes for the gusto and blows up other bits of the circuitry.  Most joyous of all, the failures cascade upstream back through the power path--until things finally fizzle out at a fuse or component that's been completely burnt-open.  (For some bizarre reason, circuits seem to "protect the fuses", instead of the other way round.)

(3) I am certainly not going to, "let it be."  T503, along with every other component, will be de-soldered and pulled from the board.  There are some board traces that need re-work, and all the solder joints need a touch-up at minimum.  Every component will then be metered and tested on my bench to see if it's in tolerance.  If I can source a modern equivalent for a reasonably cheap price, I'm tossing the old part--even if the old one is completely functional.  Period, no exceptions.  The components are 31 years old and are just begging to fail after so much neglect/abuse/time.


And so, now outed as a jerkwad, I repeat my original question:

Can anyone please point me to a part reference, specification, or component datasheet for T503 on a G07-904 Electrohome?  I have not found anything on it in the PDF's which I've Googled, and any surface markings on the part itself are long gone.  Nor do I have access to another G07, to read any part #'s or labels on the component itself.  (I'm lazy and don't feel like reverse-engineering the circuit calculations either.)

Thanks,
-S

[lilshawn]

they dipped the damn things with wax back in the day for insulation...thats what they look like after 30 years of heating an cooling. take a pill...especially since it sounds like you have no idea what you are getting into.

secondly, self labeled jerkwad or not, people here have broken and fixed  more things than you have broken. many have dozens of years experience and quite frankly know more about fixing equipment than fresh outta technical school greenhorns.

take kevins advice, clean it up... my advice:  power it up and see if it works. if it doesn't go from there. no sense replacing every component for no reason but it looks ugly...repair work can be summed up with one phrase "if it ain't broke DON'T FIX IT"...

(3) I am certainly not going to, "let it be."  T503, along with every other component, will be de-soldered and pulled from the board.  There are some board traces that need re-work, and all the solder joints need a touch-up at minimum.  Every component will then be metered and tested on my bench to see if it's in tolerance.  If I can source a modern equivalent for a reasonably cheap price, I'm tossing the old part--even if the old one is completely functional.  Period, no exceptions.  The components are 31 years old and are just begging to fail after so much neglect/abuse/time.

you may as well go buy a brand new one in that case and you don't know if it's broke if you don't try it.

it doesn't matter if you dragged it out of a lake. if it's dry when you power it up it will be fine. water/piss whathaveyou won't hurt nothing unless you try and power it up wet.

some of my ugliest chassis are the most reliable. i have brand new stuff fresh out of the box that breaks down in 60 seconds.