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Author Topic: BYTEK 135H - repair?  (Read 1094 times)

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Offline GOS

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BYTEK 135H - repair?
« on: April 15, 2017, 02:49:49 PM »
after many many years of trusty service my bytek gang programmer has finally smoked.  I used this to program bipolar proms and gang programming for SS and SP eproms for years. When I got a load error at startup - and tried several times to reboot - started to sense the dreaded aroma of electrical fire.  Don't know if I want to take this sucker apart - nice to have it working - but not the end of the world.  Anyone ever worked on one of these?

Offline channelmaniac

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Re: BYTEK 135H - repair?
« Reply #1 on: April 17, 2017, 06:05:54 PM »
I have not. Shouldn't be hard to find the source of the smell... but may be hard to find schematics to know what to replace the charred parts with.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

Offline GOS

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Re: BYTEK 135H - repair?
« Reply #2 on: May 05, 2017, 08:28:16 AM »
finally had time to disassemble the burner - inspected and sniffed - cannot see any obvious damage - there is an error when the floppy disk loads - device allows reading of eproms - but recycles when trying to burn one - It may be the power supply as it has never been changed - pictures of the p/s and main board attached - didn't see any obvious part number on it - looks like a mass produced unit.

Offline GOS

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Re: BYTEK 135H - repair?
« Reply #3 on: June 05, 2017, 07:32:57 AM »
Had the power supply checked out and it passed tests - so the problem is with the cpu - again - no obvious damage - reads eproms then crashes when I try to program an eprom.  does a complete power up - no error message.  ANYONE?

 

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