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Author Topic: Hantarex polo - R103 NTC20e replacment part  (Read 578 times)

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perjmolsen

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Hantarex polo - R103 NTC20e replacment part
« on: October 02, 2019, 05:46:43 am »
HI

I am trying to fix this spare Hantarex Polo spare chassis.
The story behind it is that it has been used for parts, so I do not know what/if there has been a fault on it before.

So I have checked all the components below out of circuit
F101
r103
d101
d102
d103
d104
d105
d106
d107
d108
d109
d110
d111
d112
zd101
d116
d117
d118
d119
t101
d127

Parts that i have changed, that where out of spec or where missing:
c104
c105
c108
R167
R28
R25
R22
T6
T4
T2
IC1

Now to my question, the "R103" "ntc 20e" where also missing, so i orderd 20pcs NTC-MF52AT MF52AT B 3950 5% NTC Thermistor Thermal Resistor 20K
https://www.aliexpress.com/item/32865703904.html?spm=a2g0s.9042311.0.0.27424c4dYc3H5V

They did not look like the one that i have on my other Hantarex Polo chassis, the ones that I had orderd where a lot smaller, so I might have orderd the wrong component, but I where thinking that maybe the new components just where smaller because they where newer, so I put on in my chassis.

But when i turned on the power the component went up in smoke.  :badmood:
The fuse where still good afterwards..
 
So have I put in the wrong thermal resistor?
I have tried to find a NTC 20E on ebay or aliexpress but witout any luck, is there a sutbile replacement part?







« Last Edit: October 02, 2019, 05:50:05 am by perjmolsen »

perjmolsen

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Re: Hantarex polo - R103 NTC20e replacment part
« Reply #1 on: October 02, 2019, 10:09:24 am »
Would this "20D-20" be a suitable replacement?

https://www.aliexpress.com/item/32867204604.html?spm=a2g0s.9042311.0.0.1eaa4c4dbBHTjY

If i google 20D-20 it has a 20 ohms resistance