Not able to figure it out. There are 9 LEDs (3V each) connected in series in the LED strip. Tested individual LED with 3V applied across. Works fine. But when 9 x 3V is applied across the whole strip, LEDs barely lit, each show very dim light and the power supply shows only 0.001 amp or less being drawn (the power supply only shows 0.00). Another working strip that works fine draws 0.10 amp. There are no resistors or caps on the strip. What could be causing such high resistance in the path when individual LEDs work fine. If it was open connection, the LEDs should not lit at all, but they do lit faintly.

There are 9 LEDs (3 V each) connected in series in the LED strip. I tested individual LED with 3 V applied across, and it works fine, but when 9 × 3 V is applied across the whole strip, the LEDs are barely lit; each one shows very dim light and the power supply shows only 1 mA or less being drawn (the power supply only shows 0.00).

Another strip that works fine draws 100 mA. There are no resistors or caps on the strip.

What could be causing such high resistance in the path when individual LEDs work fine? If it was an open connection, the LEDs should not be lit at all, but they do light up faintly.

Not able to figure it out. There are 9 LEDs (3V each) connected in series in the LED strip. Tested individual LED with 3V applied across. Works fine. But when 9 x 3V is applied across the whole strip, LEDs barely lit, each show very dim light and the power supply shows only 0.001 amp or less being drawn (the power supply only shows 0.00). Another working strip that works fine draws 0.10 amp. There are no resistors or caps on the strip. What could be causing such high resistance in the path when individual LEDs work fine. If it was open connection, the LEDs should not lit at all, but they do lit faintly.

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These strips are long, so they come in two parts connected together with a small connector. Strips are secured to the chassis using screws and also double sided tape so doesn't move at all. However, turned out the connector that joins two parts of a strip has a design flow. It doesn't provide a solid connection. I soldered the connections (+ to + and - to -) and everything works now.

Not able to figure it out. There are 9 LEDs (3V each) connected in series in the LED strip. Tested individual LED with 3V applied across. Works fine. But when 9 x 3V is applied across the whole strip, LEDs barely lit, each show very dim light and the power supply shows only 0.001 amp or less being drawn (the power supply only shows 0.00). Another working strip that works fine draws 0.10 amp. There are no resistors or caps on the strip. What could be causing such high resistance in the path when individual LEDs work fine. If it was open connection, the LEDs should not lit at all, but they do lit faintly.