The Wellon VP-390 Programmer is an affordable, reliable, and fast universal EEPROM programmer. Wellon programmer is designed to operate with the Intel Pentium-based IBM compatible desktop computers and laptops. No interface card is Necessary to plug the module into PC (this feature is especially handy for laptop users). Here is the reading error solution provided.
When tried to read eeprom 29f200 and 29f400 with Wellon VP-390 programmer, it did read eeprom, but I can not see the paw of the EEPROM.
I contacted my supplier obd2diy.fr, the engineer provided me the solution:
Check circuit board of the WL-TSOP48P adapter, short circuit the 2 holes in U2 position, see picture below:
Problem is fixed.
Ceci est du support technique du site Web OBD2DIY.fr:Wellon VP-390 cannot see the paw of the EEPROM