flir 320 - Page 1
Forum section: electronics / general

author: timoha
author_rank: Newbie
timestamp: October 29, 2020, 08:00:16 am
content: 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

author: Fraser
author_rank: Super Contributor
timestamp: October 29, 2020, 12:56:22 pm
content: 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

author: timoha
author_rank: Newbie
timestamp: October 29, 2020, 01:22:18 pm
content: 1

author: timoha
author_rank: Newbie
timestamp: October 29, 2020, 01:23:06 pm
content: 2

author: Fraser
author_rank: Super Contributor
timestamp: October 29, 2020, 01:23:27 pm
content: Thank you.I will come back to you on this laterFraser

author: timoha
author_rank: Newbie
timestamp: October 29, 2020, 05:47:59 pm
content: ??

author: Fraser
author_rank: Super Contributor
timestamp: October 29, 2020, 07:31:12 pm
content: 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%252FThe 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

author: timoha
author_rank: Newbie
timestamp: October 30, 2020, 09:53:01 am
content: Добрый день. а у вас такая доска тау. для измерения сопротивления резисторов, которые не

author: Fraser
author_rank: Super Contributor
timestamp: October 30, 2020, 11:38:39 am
content: 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 3.6VFraser

author: timoha
author_rank: Newbie
timestamp: November 01, 2020, 11:51:12 am
content: .frazer tell me. people from ukraine say that you are a strong specialist. maybe you can repair.

author: Fraser
author_rank: Super Contributor
timestamp: November 01, 2020, 12:28:59 pm
content: Yes I can repair TAU cameras but sadly I have a lot of other demands on my time at the moment so cannot offer to repair your camera at this time. Sorry.Fraser

author: zxase258
author_rank: Contributor
timestamp: November 18, 2020, 07:34:56 am
content: I have measured the values of these resistors. It is not very accurate but can be used as a reference. The capacitor has not been measured, I think 10-22uf can be used(except C29, refer to the datasheet). Good luck.