Re: Garmin dog training collar.ID help with SMD, Please?
Thanks..
I did remove it from the board and test out of circuit. I tested with LCR-T7 ESR meter...Readings were...
BJT-NPN
hFe=207
Ube=698mV
Ic=5.9mA
There is no audio, except for beep tone when turning unit on and off.
It has 3.7V input power
Data sheet:
[url]https://cdn.badcaps-static.com/pdfs/175a260e6a62c4d33598f7be5f171f21.pdf[/url]Re: Garmin dog training collar.ID he.....<br />
I did...
Macroman
Member
Last Activity: 12-02-2022, 01:27 PM
Joined: 02-27-2022
Location: MS/Sorsogon
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Re: The Hall of Shame - Badcaps Photo Montage
Yep..a little bit.....
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Re: The Hall of Shame - Badcaps Photo Montage
I think I found the reason my Vizio TV is cycling on and off and it has a buzzing in the speakers even when muted...
...Leave a comment:
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Re: Garmin dog training collar.ID help with SMD, Please?
Did some more testing with multimeter in diode mode and found that there is a BJT-NPN transistor on the board that is not testing correctly..
The attached image shows the readings I recorded and the placement of the red and black leads during the testing.
...Leave a comment:
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Re: Garmin dog training collar.ID help with SMD, Please?
Thank you very much!!..
I have found NPN transistor that is not giving correct reading when tested....Leave a comment:
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Re: Garmin dog training collar.ID help with SMD, Please?
okay..thanks!
I plan on metering one today.
I hope to learn the value of the component, then maybe purchase replacement smd..it will help my friend to save a lot. New collar is $300 USD each.
...
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Re: Garmin dog training collar.ID help with SMD, Please?
Did some further trouble shooting and found that the 0402 component that the arrow is pointing to in the image below is shorted on all the units that I have tested so far.
Replacing it with good ones from donor boards fixes the issue of the non-working tone/shock function of the collars.
Also...some of the collars with cracked inductors work after replacing the 0402 component.
...Last edited by Macroman; 09-12-2022, 07:21 PM.Leave a comment:
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Re: ID help with SMD, Please?
Continuing with the garmin collars...Here is another TT10 everything working except shock and tone. I'm posting this also hoping that it may help others with these issues.
Replaced the GPS module and collar will connect with handheld Alpha100 and able to track but the shock and tone functions are still not working.
I found 4 components (capacitors) that are reading short to ground (marked with red marker), 1 on one side the board near the SN9B019 chip (multi-voltage power controller) and 3 more capacitors on the other side of the...Leave a comment:
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Re: ID help with SMD, Please?
Thank you for the valuable info!!
This is a TT10 collar...I have looked at several of these for my friend (TT10's, TT15's, and a couple T5's) and a lot of them have the same problem with the inductors for sure.
Do you think that this is being caused from a "jar" while the dog is wearing the collar??... Or could it be that the guys are tossing the collars around roughly..say into a metal toolbox or storage compartment on a dog box, etc.????...Leave a comment:
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Re: ID help with SMD, Please?
Thank you!!
I have a working collar..so I am going to do some comparison testing with one of the non-working collars and check the voltages and readings on some of the other components in the circuit....Leave a comment:
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Re: ID help with SMD, Please?
Yes collars are made by garmin...so probably going to need a lot of luck to find the replacement coils even....
I know that I need the replacement coils/inductors.
And you are thinking is the chip is maybe bad also?????...Last edited by Macroman; 08-19-2022, 04:44 PM.Leave a comment:
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Re: ID help with SMD, Please?
Newer version of same model collar..
Different looking coils but same damage and different numbers on the chip..
...Leave a comment:
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Re: ID help with SMD, Please?
Best I can tell the number on the chip is..
SN98019
A0
TI 91k
ASKL
The theory about the wet dog is very possible for sure.....Leave a comment:
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Re: ID help with SMD, Please?
another couple of the boards..same smd's, cracked
...Leave a comment:
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Re: ID help with SMD, Please?
Thanks..I have no idea why they are breaking, to be honest.
The collars are strapped around dogs necks and the dogs fight huge wild hogs/boars (anywhere from 150-350 plus pounds) and are in a lot of swamp areas..lots of water. I am not seeing any moisture damage in the units though.
I am guessing that it has something to do with the shocking part of the collar..maybe it over heats if shocking for too long..although the collar does have a 10 second auto shut off on the shock function. Not sure...but I do know that these...Leave a comment:
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Re: ID help with SMD, Please?
added to original post..sorry about that...Leave a comment:
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Garmin dog training collar.ID help with SMD, Please?
I have several boards like this from my buddy...The boards are out of training collars for hunting dogs. Powered by 3.6V Li-ion, 2750mAh, 9.9Wh battery. This components are related to the audible tone and shock functions of these collars... and all have these same SMD components that are bad. All the boards have 2 of these (as shown in the 2nd image) and the related functions of the units are non-working on the boards with the damaged SMD's. They have only C on them.
Does anyone here know how to find out what this component is and where to get it.. if it is available??
...Last edited by Macroman; 08-18-2022, 03:31 PM. -
Re: Help...Replacement of LDO voltage regulator
Thanks..it is close to the original....But I have a question, please.
This AP7383-36Y-13 is 150mA and the original was 100mA....
Some other variables are not the same also...
Should this be done or maybe it will be too many amps or other variables will be too high for the circuit???
Remember i am a beginner at this so that is why all the questions.
I don't wish to burn anything up or ruin the flash unit beyond repair???...Leave a comment:
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Re: Help...Replacement of LDO voltage regulator
I don't find any available in the USA though...???
Is that a trustworthy site to order from and ship to USA??
Also I am looking for a suitable replacement since the 7536-1 is EOL......Last edited by Macroman; 02-27-2022, 08:38 PM.Leave a comment:
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Help...Replacement of LDO voltage regulator
I sure could use some help with replacement of a LDO voltage regulator...any help would be appreciated.
I have a camera flash with twin heads that in the late hours of the evening while shooting macro photos of insects...I put a couple batteries in backwards
and it blew a 47uf capacitor, (replaced already), it messed up a 6 pin 2 position switch (replaced already) and also a 7536-1 LDO voltage regulator, 100mA, 3.6v OUTPUT, ±3%, SOT-89.
[URL="http://e-ele.net/DataSheet/HT75XX-1.pdf"][I]Data sheet here-- HT7536-1 LDO voltage regulator, 100mA, 3.6v...
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