Difference between revisions of "Upd 2x0 217 power board"
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== 200-217-005== | == 200-217-005== | ||
*3-1-09 : Vclamp circuit failed (permanently on) when MPJA power supplied failed. | *3-1-09 : Vclamp circuit failed (permanently on) when MPJA power supplied failed. | ||
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===todo=== | ===todo=== | ||
| − | * | + | * replace PFET and power resistor |
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| + | |||
| + | == 200-217-005== | ||
| + | *3-28-09 : measured battery voltage at zero and 1.8 volts | ||
| + | *3-28-09 : measure pole to pole of safety FETs, 38 and 72 ohms. -> battery | ||
| + | *3-1-09 : safety fets are not engaged. | ||
| + | |||
| + | ===todo=== | ||
| + | * replace coin cells (use adhesive to secure batteries to PCA) | ||
Revision as of 22:25, 28 March 2009
Contents
FET 2x0-217 PCA
200-217-001
- 3-28-09 : removed from AK-WB2 w/exploded power FET
todo
- remove damaged power fet
- test other power fets (safety fets are on and will complicate this.)
- if all other tests are positive, apply 10 volts with a 100mA current limit
- if successful, attach to state controller with "testjig" software build and apply 20V limited to 200mA
- if successful replace missing FET and repeat above power tests.
200-217-005
- 3-1-09 : Vclamp circuit failed (permanently on) when MPJA power supplied failed.
todo
- replace PFET and power resistor
200-217-005
- 3-28-09 : measured battery voltage at zero and 1.8 volts
- 3-28-09 : measure pole to pole of safety FETs, 38 and 72 ohms. -> battery
- 3-1-09 : safety fets are not engaged.
todo
- replace coin cells (use adhesive to secure batteries to PCA)
