READ INCIRCUIT EPROM WITH UPAUSB

**MEH** · 4th February, 2011, 08:29 PM

hi to all

i would have somes informations about upausb with cable for eprom
i bought one and i can't read eprom incircuit with it.
i tried all connections and test them but nothing

even if i desolder eprom and i read it with it

someone can help me or knows why i can't?

thanks for your replies

**ominimicu** · 5th February, 2011, 12:30 AM

i use that test clip with zp20 programmer. and works fine.

**Zmann** · 5th February, 2011, 05:04 AM

I use the same clip with chips both in circuit and stand alone chip working fine (on normal condition). If the desoldered chips are tested with the clips and all fail the problem can be at one or more of these, the programmer, continuity and correctness of the clip and running cables and the chip itself. Soldering the bare chip with short small wires to a bare DB9 female connector and put it on the programmer would help you to locate a fault.

**gtmech** · 6th February, 2011, 09:06 AM

also dont forget that not ALL eeproms can be read in circuit

**elchip** · 6th February, 2011, 11:57 PM

Originally Posted by gtmech

also dont forget that not ALL eeproms can be read in circuit

Read ICP any eeprom is danger ( may be bad dump > 50% is chanse for error reading ) as you say. So always is better to desolder out and read..

Regard's

**dashradio** · 8th February, 2011, 01:10 AM

Buy these then you can read in circuit UPA USB Programmer - Dongle And Lead Connector Set on eBay (end time 11-Feb-11 12:33:06 GMT)

**autocargo** · 8th February, 2011, 09:40 PM

Originally Posted by dashradio

Buy these then you can read in circuit UPA USB Programmer - Dongle And Lead Connector Set on eBay (end time 11-Feb-11 12:33:06 GMT)

IMHO those leads are not better than self made ones...And look at their price

For that money you can buy all parts and make yourself plenty of leads. Buying them would not assure any better read in circuit. In circuit reading is a gamble, doesn't matter what leads you are using,point. Remove all from circuit and never have any problems.... It's my 2 cents....

**racin-snake** · 8th February, 2011, 09:55 PM

i have had a bit of a dilemma with these adaptors

Tek-Tronics UK

i can get a read on a few proms but never tried a write on anything
all in all helpful cheap and cheerful
but i think ile stick to de soldering in future
but as said if you want to try ?

**ArnautuIonut** · 8th February, 2011, 09:59 PM

I have this adapter and works very well .In some cases when i put my hand over the cables he reads every time diferent things .Try to don't touch the cables when reading and everything goes well .

**tachonow** · 8th February, 2011, 10:16 PM

An well made programmer can read almost all eeproms incircuit. Must have in/out tristate and scaling output power with pullup resistor.
For example Codiprog is one of them and also Carprog. I dont want to talk about DP3 and Enigma. There are no problems for them to read any eeprom incircuit.

**paraver** · 12th July, 2011, 03:30 PM

Originally Posted by MEH

hi to all

i would have somes informations about upausb with cable for eprom
i bought one and i can't read eprom incircuit with it.
i tried all connections and test them but nothing

even if i desolder eprom and i read it with it

someone can help me or knows why i can't?

thanks for your replies

Originally Posted by elchip

Read ICP any eeprom is danger ( may be bad dump > 50% is chanse for error reading ) as you say. So always is better to desolder out and read..

Regard's

I agree!!

I have a set of those clips, and i allways remove eeprom to read it. With clips, i think more than 75% errors on reading.

Regards