Sprint 2 TEC TM623 cap explosion; Where to find ceramic HV caps?

Tenn_pin

New member
Joined
Dec 28, 2008
Messages
101
Reaction score
0
Location
La Vergne, Tennessee
Sprint 2 TEC TM623 cap explosion; Where to find ceramic HV caps?

I have put this project off long enough. The monitor had 2 caps explode and I cannot find them anywhere. I ordered the BR kit, but the ones that exploded were not in there and he said he does not carry them. I have checked at Newark andsome others with no luck. Doess anyone have any suggestions where I can get the remaining caps?

Here is a list of what I need to complete the rebuild:

C305 .47 mf 50V
C319 .01k 630V axial
C801 .056k 630V axial (exploded)
C418 .33k 400V axial (shows 200V in the manual) (exploded)
C208 .22 mf 400V axial

At this point, I do not trust any of the caps, so I would like to replace all of them. If I cannot find the correct ones, especially the ceramics, does anyone have a working board for sale?

Thanks,
Randel
 
Last edited:
Is there a difference between the poly film and the aluminum housed caps that are on the board?
 
Last edited:
Is there a difference between the poly film and the aluminum housed caps?

Non-electrolytic capacitors are the low capacitance ones (usually less than 1uf). They have no polarity.

For higher capacitance values, there are electrolytic capacitors. These are the ones you see listed as Aluminum Electrolytic caps. They have polarity.

-Ian
 
The values in the manual are going to be listed in uf or mf - both of which are abbreviations for microfarad.

When you see a K in the description of a capacitor, it refers to the tolerance, in this case, 10%. So, a capacitor listed in the manual as 0.33mf K would be a 0.33uf capacitor, with a tolerance of 10%.

Some small ceramic capacitors are in values of picofarads, or pf - which is another unit of measure, smaller than a microfarad. 1uf = 1000000pf.

-Ian
 
The book lists (and cap has) a small "k" with the .33, so is this a picofarad? From what I gather, the use of pF ended about 1980 and everything went to mF.

Is it safe to use a .33 mF, or do I need a .0000033 mF?

Thanks Ian,

Randel
 
The book lists (and cap has) a small "k" with the .33, so is this a picofarad? From what I gather, the use of pF ended about 1980 and everything went to mF.

Is it safe to use a .33 mF, or do I need a .0000033 mF?

Thanks Ian,

Randel

Like Ian said -- the "K" or "k" is the tolerance and has nothing to do with the rated value on this particular part. .33uF would be proper value.

Actually, the use of "mF" ended years ago. Now caps are in pF (pico-Farads), nF (nano-Farads, not used often), uF (micro-farads) and F (memory backup caps in Farads)

"m" within mF used to mean "micro" for capacitors and "milli" for everybody else...off by a factor of 1000 between micro and milli. To alleviate confusion, "m" has been discontinued as an idication of micro and now a lower case "u" is used.

Ed
 
Thank you

Thanks for the instruction. You guys have been the first to answer my questions. I hope this game comes back to life so me and my Grandson can play it.

Randel
 
Back
Top Bottom