preenfm Forum
PreenFM => preenfm2 and preenfm3 => Topic started by: martindunne on September 08, 2014, 02:59:41 PM
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hi there just put another preen together today and have a low noisy output? which components and areas of the pcb should i check first.
thanks
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Hi Martin,
Check that your op amp is well placed, and that its ground and 5V pins actually shows 0V and 5V.
Then all the resistor values around the op amp.
http://ixox.fr/preenfm2/the-pcb-r5/pfm2_17/#main
Xavier
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have got near enough 0v on pin 1 and 5v on pin 8, cheers. are there any schematics so i can test continuity.
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solved! my fault used wrong op amp only 1 channel
TLV2451CP
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Cool...
Thanks for the update...