Hi!
I have a problem with my new Xgecu TL866II Plus that I bought from Aliexpress.
The part of my available chips read and write pretty well (27512, Atmega32, 24c01, pm49fl002t, pm49l004t, w78e58p, am29f010), whereas others (cf25q16bs, mx25l1636e, en29f0002nt) have a constantly pin errors.
Empirically the first pin operates incorrectly because with some trouble chips the software shows pin 1 error.
I completely checked contact by multimeter through board before 70th pin of the PIC24FJ256GB110 and adapter if required and no luck.
I thoroughly soldered D109, R119, Q301, D201, then I clean out the flux around the connector and no result too.
I not even decoupled the PCB's.
Now I converse with the Chinese seller, but not confident about the outcome, he answers very reluctantly.
Please tell me on what to do next.