I've been asked to repair programmable battery chargers.
One works but will not accept new algorithms or read any information.
The programmer connects to B+ and B- leads with battery is disconnected from B+.
Owner somehow mis-connected an interlock lead that was also connected to B+ blowing internal fuse.
Since then it has lost the ability to communicate.
I have other chargers that are dead and one or two that are working. If needed I will try to swap chips. This is above my ability, and I don't hold much hope for success.
I traced B+ thru resistor network to pin 61 of M430. Does that make sense? It also goes to a pin of 10 pin unused header.
Is there someone who could clone these chips? It looks like I will have enough repairs to make it worth sourcing.
Company is no help. Will not furnish profile data, parts, or schematic.
Can the programming be read in circuit?
I have the factory programmer that they sell with no support.
One works but will not accept new algorithms or read any information.
The programmer connects to B+ and B- leads with battery is disconnected from B+.
Owner somehow mis-connected an interlock lead that was also connected to B+ blowing internal fuse.
Since then it has lost the ability to communicate.
I have other chargers that are dead and one or two that are working. If needed I will try to swap chips. This is above my ability, and I don't hold much hope for success.
I traced B+ thru resistor network to pin 61 of M430. Does that make sense? It also goes to a pin of 10 pin unused header.
Is there someone who could clone these chips? It looks like I will have enough repairs to make it worth sourcing.
Company is no help. Will not furnish profile data, parts, or schematic.
Can the programming be read in circuit?
I have the factory programmer that they sell with no support.