Re: Sega G-80 PSU - Audio Amp

just adding my 'me too' here...

I much prefer repairing linears.. its what games were designed with, and often do include things like POR circuits, isolated audio power supplies, custom sound amps, battery backup voltages. All of which neatly fit and work in the cabinets that we restore everything else on, why slack off here? just cos power supplies aren't glamourous, doesn't mean they should be neglected, but i _know_ most people do neglect them because of the percieved toughness of testing and repairing on your bench.

In essence, i think the reluctance for anyone to rebuild/test an old linear is that the input voltages to linear supplies vary on so many games, you can't make a 'universal' linear PSU test rig. I actually have 3 or 4 transformer rigs taken from scrapped cabients that i use to fix several common models of linear supplies that i come across, and have built a switchable dummy load for load testing of each one. It does take a lot of time and affort to built transformer rigs up so that you can test linears on a bench properly. But when you do, they're dead easy and cheap to fix!

Phooey to switchers i say.

:-)

--
Andrew Welburn
http://www.andys-arcade.com
  ----- Original Message ----- 
  From: SVerlander@aol.com 
  To: vectorlist@vectorlist.org 
  Sent: Friday, March 04, 2011 6:54 AM
  Subject: Re: VECTOR: Sega G-80 PSU - Audio Amp 
  I never under stood why people think a switcher is better than a linear power supply. 
  I guess I just like to keep a classic original and not hack up the wiring harness. I have 3 star trek games and have never had a problem from the power supply's. I have seen a few that had problems with the inline pins having bad contacts and burning up but just replace the pins and plugs and their good as new.
  It can and has been done so good luck.
  In a message dated 3/4/2011 1:29:25 A.M. Eastern Standard Time, zittware@hotmail.com writes:
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