Author Topic: flir 320  (Read 276 times)

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Offline timoha

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flir 320
« on: Yesterday at 08:00:16 am »
Hi everyone . I have a plau flirting tau 9 hz. there are no some elements on the alat. can you suggest what was there. maybe there are schemes. thanks
 

Online Fraser

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Re: flir 320
« Reply #1 on: Yesterday at 12:56:22 pm »
That PCB looks very sad. Can you capture a better picture that is in good focus to help me see which components are missing or have moved ? I wilL check my TAU repair notes and schematics to see if I can help.

Fraser
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Offline timoha

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Re: flir 320
« Reply #2 on: Yesterday at 01:22:18 pm »
1
 

Offline timoha

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Re: flir 320
« Reply #3 on: Yesterday at 01:23:06 pm »
2
 

Online Fraser

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Re: flir 320
« Reply #4 on: Yesterday at 01:23:27 pm »
Thank you.

I will come back to you on this later

Fraser
Cogito, ergo sum
 

Offline timoha

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Re: flir 320
« Reply #5 on: Yesterday at 05:47:59 pm »
??
 

Online Fraser

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Re: flir 320
« Reply #6 on: Yesterday at 07:31:12 pm »
I cannot find the schematics that I drew for the power supply section at the moment.

I may still be able to help though. You will need to reverse engineer the area of the board that is damaged.

The parts that are highlighted in the picture surround the 3.6V buck converter IC. This IC is marked "BYJ" and is a Texas Instruments TPS62240 adjustable buck converter.

https://www.ti.com/lit/ds/symlink/tps62240.pdf?ts=1603980648999&ref_url=https%253A%252F%252Fwww.google.com%252F

The datasheet shows you the recommended components used with the IC so use that datasheet to compare to the TAU PCB. The missing or moved components may then be identified. The Buck converter output voltage is set to 3.6V using a simple potential divider circuit as detailed in the datasheet.

The missing Buck converter inductor that is marked as "332D" and is a Coilcraft 3.3uH ferrite "drum and sleeve" power inductor suitable for use at 2.25MHz.

See here:

https://www.coilcraft.com/en-us/products/power/shielded-inductors/ferrite-drum/#/

I would suggest maybe a LPS3014 or LPS3015 type but check the dimensions against the other "332D" inductors on the PCB to confirm.

Fraser
 
« Last Edit: Yesterday at 08:16:06 pm by Fraser »
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Offline timoha

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Re: flir 320
« Reply #7 on: Today at 09:53:01 am »
Добрый день. а у вас такая доска тау. для измерения сопротивления резисторов, которые не
 

Online Fraser

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Re: flir 320
« Reply #8 on: Today at 11:38:39 am »
I do not have a TAU camera available to measure the values of the resistors but they can be calculated using the data sheet. You need an output from the Buck Converter of 3.6V

Fraser
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