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Overcurrent Detected

renovo

My VP299 is programming ATF16LV8C chips fine, without AC adapter. When trying to program ATF22LV10C chips it asks for an AC adapter. When I plug this in and try to program, it reports "Over Current Detected!".

I don"t think it"s the chips. They are brand new and I tried more than one. What could be the problem?

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[ Posted:2019-12-13 23:30:38 ]

Re:Overcurrent Detected

lark

Please change R28(a resistor) with the resistance of 51 ohm;please change R17(a resistor) with the resistance of 330 ohm.

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[ Posted:2019-12-18 09:42:30 ]

Re:Overcurrent Detected

renovo

Changing the resistors is no problem (I design the circuits these chips are used in). But first I have to find the screws. I assume they are hidden below the rubber bumpers on the bottom of the unit.

Question: are these values safe to use? With that I mean, are they tailored specifically to this chip or will they also work correctly for other chips?

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[ Posted:2019-12-23 23:24:31 ]

Re:Overcurrent Detected

lark

Increasing the value of the resistor is to promote the band of protecting circuit.It"s no problem for other chips.Also, the screws are under the rubber bumpers.

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[ Posted:2019-12-25 09:18:47 ]

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