Part needed

don1400

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Hello,
Anyone have a +5 regulator FT2955 or know of a suitable sub? I need this part to repair dead 5v on power supply for Midways '79 game 18 Wheeler.
Thanks,
Rich
 
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Are you sure it's a regulator. I done a quick search and came up with a PNP TO-220 power transistor. Check the specs but a MJE2955 should work.

Thanks for the correction on the part. Checking the data sheets, specs look pretty close, I'll give it a try. I searched all over with Google, NTE, cross references etc and found no subs, just curious where you searched?
Thanks again,
Rich
 


I was taught about this kind of circuit, it's a tranny used as a reg

But the part failed could be either the FT2900 or one of the circled parts

The upper circled part holds the base of the tranny at a constant voltage. This method is a cheap way to get more current out of a regulator
 
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The MJ2955 is the pair to a 2N3055. I have it in stock if you need one. There are a bunch of numbers that sub the 2955 but most are obsolete and the 2955 is the most readily available part.
 
The MJ2955 is the pair to a 2N3055. I have it in stock if you need one. There are a bunch of numbers that sub the 2955 but most are obsolete and the 2955 is the most readily available part.
I stopped by my local Op today and he had the MJE2955 on hand so I'll pop it in tomorrow and hopefully I'll have +5v. For extra measure I'm going to replace the original diodes and electrolytics while I'm at it.
Thanks all for the help.
Rich
 
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