Do you have questionable DRAM that you’re not sure is good or bad? This tester will help you sort through all that. You’ll quickly find out if any of your DRAM chips are bad.
The DRAM tester at its core, utilizes an ATMEGA328P with an Arduino boot loader which means the firmware is written in C.
The construction is such that the ATMEGA328P is socketed so it can be easily removed for firmware updates.
The coolest part about this tester has to be the OLED screen. This gives you a very nice read out of the testing progress. If the tester discovers that a chip is bad it will even display where it found the problem.
You can test both 4164 and 41256 DRAM. Simply move the jumper accordingly. 1 – 2 for 4164 and 2 – 3 for 41256.
The DRAM tester is assembled here in the US in Florida. I build these myself. They are not mass produced. Each tester is fully tested and carefully packaged before being shipped out.
Note: Please keep in mind that due to the speed limitations of the micro controller, in-depth tests that test the access time capability of DRAM are not possible. With that said, this tester does a great job at giving you 100% accuracy at detecting faulty DRAM. What this means is that if a DRAM is detected as bad then it is definitely bad but if it is detected as good, it could be a false positive and that particular memory chip may still have timing issues that would not have been discovered while testing.