Author Topic: Help with repair of Turbo Express  (Read 2571 times)

jelloslug

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Re: Help with repair of Turbo Express
« Reply #30 on: October 05, 2012, 01:13:26 AM »
lol, i checked the chart before responding.
everything with a 900 number relates to backlight
500 is power supply Q506, C506, VR500 -24V/ VR501 +5V
700 series is logic/chipset ect

Cool.  How about the pin out for the board side of the AC adaptor jack?  The traces are really bad in that area on mine so I can't really see how to fix that at this point.

turbokon

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Re: Help with repair of Turbo Express
« Reply #31 on: October 05, 2012, 03:47:16 AM »
One time I had a TE that was acting up like yours. I smell something burning. I opened it up , fired it on and saw smoke coming from the transistor near the cap you mentioned. I had a short across that cap. Sure enough I saw a piece of solder wedged between two contacts of the connector that the controller pcb connects to. I remove the solder piece and that cap no longer shorted. Funny thing the fuse didn't blow and it works just fine after that.
Turbo fan since 1991 after owning my first system.

Check out my website:)
www.tg16pcemods.com

Xenogears

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Re: Help with repair of Turbo Express
« Reply #32 on: November 01, 2017, 09:22:07 AM »
My TE Video has died. I changed the Caps as I had the Dark Screen issue. Now everything is unchanged after  a complete Recap. The Unit works, Sound is there but the Backlight is only very dark, Constrast Adjustment does nothing. I decided to create a "Check your GT Testpoint-Values" Spreadsheet. Here are my values - Excel-Sheet on Fileupload:

GTCHECK.xlsx


The Chart is not complete yet, so please feel invited to add working Values and fault Values. Maybe we could create a Quick-Test System: If TP 50X shows that Value, Part no XXX is broken/trace is dead.

I need to find out, why -24V are missing and why Q500 / CC501 /L500 are getting hot...