Hi guys, I have this wifi extender from 2 years ago. Itstarted to hhavesome problem like ddisconnectingalone and reconnect alone some time I must turning off wait a couple of minutes and open it to working again, anyway I opened and found some capacitor not very good then I replaced, and this kind of resistance.. It's possible I can't buy it? I mean I read the mark on the pcb but I didn't find it... It's very strange that or the problem is myself getting badly research... thank you all for your reply , your time and your help 🙏
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Tplink RE600x wifi extender
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It is some sort of a high wattage low value resistance resistor in the power section. It is probably used as a fusible resistor. So my guess is you got a shorted something in there that needs to be found before you replace that resistor.
The larger wattage (bigger) resistor shouldn't be a problem. However a smaller that the original one is a problem. Of course best would be to gat the same size (wattage) resistor, but if 7.5 Ohm 3W was written on the board, it is fine by me. Just be mindful of replacing parts, because it is like you you put a 10A fuse in a 5A circuit.
Last edited by CapLeaker; 07-21-2024, 12:14 PM.
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Originally posted by CapLeaker View PostIt is some sort of a high wattage low value resistance resistor in the power section. It is probably used as a fusible resistor. So my guess is you got a shorted something in there that needs to be found before you replace that resistor.Last edited by labello; 07-21-2024, 12:17 PM.
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Originally posted by labello View Post
Thanks man but the thing was working before I opened it. Some time it just slow down the connection.. So I opened and found the resistor no so good.. It's really strange iI already checked those capacitor and the bridge rectify they are okay. Maybe the resistor that I buying is too big? Thanks
To me: if that resistor blows, it's lights out.
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Originally posted by CapLeaker View Post
Like I said before, a bigger resistor shouldn't be the problem. However a too small wattage resistor is a problem. It used like a fuse. Is the original resistor blown too or how did you deferment the resistor is bad?
To me: if that resistor blows, it's lights out.2 Photos
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Then the cap should go poof!
Right now my bet is you got the wrong resistor type. The original is wire wound and you replaced it with a carbon composite type. Stick another wire wound one in there.
measure the original resistor with your ohm meterLast edited by CapLeaker; 07-21-2024, 02:12 PM.
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Originally posted by CapLeaker View PostThen the cap should go poof!
Right now my bet is you got the wrong resistor type. The original is wire wound and you replaced it with a carbon composite type. Stick another wire wound one in there.
measure the original resistor with your ohm meter
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Originally posted by CapLeaker View PostHmm… violet, green, gold, gold is 7.5 ohms 5%. Well if the wire wound one was open, then something is drawing too much current. Something has to be shorted.
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Originally posted by petehall347 View Post
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Guys both of you are right! The black capacitor was in backwards (soldered in the wrong direction by someone) I changed the resistor again with a new one and put the capacitor in the right direction, and then it works again!! Your guidelines was so helpful I almost put it on the bin. Thank you both of you!! One more questions why the original resistor is different against the new one? Is something that I must understand? Thanks
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