EPROM Programmer: Programming TMS2532 Chips w/ 25v

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Programming TMS2532 chips requires a 25V supply, which the GQ-4x4 programmer fails to provide reliably. Users suggest alternatives like the EMP-20, though it uses a parallel port, which is less desirable. A high-intensity UV light exposure at 2537 Angstroms is necessary before programming, with some users sharing improvised methods for UV exposure. The TL866-3G programmer is mentioned as a potential solution, but its effectiveness for this specific chip is uncertain. There is a need for a reliable programmer that consistently delivers the required 25V for successful programming of TMS2532 chips.
imsmooth
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I want to program some TMS2532 chips that need 25v in order to program. The GQ-4x4 does not seem to be doing it. Any suggestions for a USB-type programmer for this task? I've seen the EMP-20, but it uses a parallel port that I am not thrilled about.
 
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Before this device is programmed, it must be exposed to a high-intensity uv light (2537 Angstroms).
Are you doing that?
If not, from personal experience I have discovered that an arc lamp improvised from a 40VDC supply and a #2 pencil will make quick work of it.
Most device programmers (such as your GQ-4x4) are able to scan the target device and report whether it is fully erased.
 
Yes
I’ve successfully programmed chips many times and I have a UV eraser.

My success with the 2532 is intermittent and when I put in oscilloscope on the pins I can see my programmer is not hitting the 25 V needed.
 
I haven't used that kind of programmer for a while. Even if I recalled model numbers, they likely wouldn't be available anymore.
Do you do "Blank" checks before programming?
 
Yes. Again, I am just asking if anyone knows of a good programmer that hits 25v reliably because the one I have doesn't.
 
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