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nmc27c16bq Reply  
handsome
zige79
 Hi. My VP-390 fails to program these these chips (nmc27c16bq), i"ve tried new and old software/firmware. These chips are new and I have had no problems burning them on a friends programmer.
Go back list [ Posted:2014-06-11 18:16:26 ] Edit Administer top

Re:nmc27c16bq Reply  
beautiful
jin
 If you use the latest software, you must do the "system update" first to update firmware to 20.0.
Go back list [ Posted:2014-06-12 16:23:22 ] Edit Administer Top

Re:nmc27c16bq Reply  
handsome
zige79
 Hi. I have the latest firmware (v20) and latest software.
This is the error that I get

.Auto Program......
.Blank Check......
.Program......
Device Address00000000H　Device DataFFH　Buffer Data24H
Auto Program fail!
0.58Sec

Go back list [ Posted:2014-06-13 17:09:12 ] Edit Administer Top

Re:nmc27c16bq Reply  
beautiful
jin
 We have tested it OK. When you program the NMC27C16BQ, you must connect the ac adapter to V390.
Go back list [ Posted:2014-06-16 14:49:15 ] Edit Administer Top

Re:nmc27c16bq Reply  
handsome
zige79
 I changed nothing on my vp-390 or comp but now all of a sudden
I can program nmc27c16bq. I"m still having problems with my programmer
and have had trouble programming more common chips like 27c512.
It passes self test and 12v seems fine but i"m getting 4.6v when testing 5v with usb and 4.86 with ac adapter plugged in. Could this be causing some of my issues?
Go back list [ Posted:2014-07-17 17:22:23 ] Edit Administer Top

Re:nmc27c16bq Reply  
handsome
lxl
 When you program 27xxx series, you must connect the ac adapter to V390.
Go back list [ Posted:2014-07-17 19:22:45 ] Edit Administer Top

Re:nmc27c16bq Reply  
handsome
zige79
 Thanks for the reply. I always connect the adaptor to the programmer.
Could the reason I"m having trouble reading some chips is because vcc is low?
Go back list [ Posted:2014-07-19 07:05:20 ] Edit Administer Top

Re:nmc27c16bq Reply  
handsome
lxl
 no,27xxx is older chip, sometime,the chip is bug.
Go back list [ Posted:2014-07-19 07:33:15 ] Edit Administer Top

Re:nmc27c16bq Reply  
handsome
zige79
 Thanks for the reply. I just tested the 27c512 eprom that gives me inconsistent reads on my friends programmer and it reads fine. I know that many ic"s do strange things and wont work properly if vcc is as low as 4.86v. Do all vp-390 programmers output 4.6v with usb and 4.86v with adapter? If my programmer is faulty is there something I can do to fix it? Thanks
Go back list [ Posted:2014-08-13 16:19:52 ] Edit Administer Top

Re:nmc27c16bq Reply  
handsome
lxl
 maybe your programmer need repair.
Go back list [ Posted:2014-08-13 22:35:26 ] Edit Administer Top

Re:nmc27c16bq Reply  
handsome
zige79
 Do you have any advive on how I may be able to fix it?
Go back list [ Posted:2014-08-16 17:35:42 ] Edit Administer Top

Re:nmc27c16bq Reply  
handsome
lxl
 your programmer series No.? (390x-xxxx)
Go back list [ Posted:2014-08-17 17:03:29 ] Edit Administer Top

Re:nmc27c16bq Reply  
handsome
zige79
 Thanks for the reply. It"s 3903-0120
Go back list [ Posted:2014-08-17 17:18:32 ] Edit Administer Top

Re:nmc27c16bq Reply  
handsome
lxl
 Try to change　RB17 RB18 RB19 RB20 RB21 RB22 RB23 RB24 RB25 RB26 RB27 RB28 from 102 to 331 at bottom board.
Go back list [ Posted:2014-08-17 19:33:28 ] Edit Administer Top

Re:nmc27c16bq Reply  
handsome
zige79
 Would I be able to send it in to you guys for repair?
Go back list [ Posted:2014-09-25 18:20:35 ] Edit Administer Top

Re:nmc27c16bq Reply  
handsome
lxl
 yes,you can send us to repair.the programmer and the chip.
you need Bear Maintenance cost and Delivery fare.
Go back list [ Posted:2014-09-26 08:52:08 ] Edit Administer Top
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