Re: Please Help!!
All them trim caps are soldered to the screws etc. so theres no way of moving them thats all done by the company who make them. its only 12v dc power supply im using. i think there must be a break on the board somewhere. i touched that MOSFET and it was that hot it left a blister on my finger lol. to buy a new board would cost £70 so i might as well just get a new rig for that price.
StevieG
Member
Last Activity: 08-19-2012, 07:07 AM
Joined: 08-15-2012
Location: uk
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Re: Please Help!!
ive screwed that mosfet to the side of the aluminum case as it should be. but im not getting the power it should be giving. i can just about get the signal upstairs on a fm radio. the transmitter is pll digital display. you tune it by using the up and down buttons as shown in picture.
as i don't know anything about electronics. maybe best to just get another one off ebay.
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Re: Please Help!!
All i know its a 18w fm transmitter ;-)...Leave a comment:
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Re: Please Help!!
yeah thats the one what gets hot the MOSFET.
dose that mean i need to get another one ?...Leave a comment:
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Re: Please Help!!
thats the part you showed me where it went and how to solder it.
its that hot it burnt my hand lol
that black resistor at the top right gets red hot....Last edited by StevieG; 08-15-2012, 05:20 PM.Leave a comment:
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Re: Please Help!!
No he never touch any of the settings.
is that rf resistor meant to get red hot ?
i warned him not to touch any of them setting on the caps. they are all where the should be....Last edited by StevieG; 08-15-2012, 04:56 PM.Leave a comment:
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Re: Please Help!!
got it all powering up. but not giving enough power out like it used to. it used to reach 15 miles but now it just abouts gets upstairs. i don't know what else to do....Leave a comment:
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Re: Please Help!!
Just tested it by touching the 12v dc wires straight 2 the circiut board and it powers up ok. but when trying to power up through the proper way nothing happens....Leave a comment:
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Re: Please Help!!
No voltage there. the grey cable is to switch it on. and your right thats where the 12v dc power go's. ive got no way in testing the board as i don't have a metre
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Re: Please Help!!
There was power before my mate burnt the track off the board. but i never tryed it without the rf resisstor.
heres a couple of pictures of the board....Leave a comment:
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Re: Please Help!!
2 mins i get a pictureLeave a comment:
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Re: Please Help!!
hi again. soldered that as in picture. but no power getting through the board when switched on, maybe a break on a trace somewhere ?...Leave a comment:
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Re: Please Help!!
Many thanks for that i will give it a try now and let you know how it all go's
Steve...Leave a comment:
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Re: Please Help!!
ive been looking at the board for over 2 weeks now, but i just can't see whats what. its just a maze to me. i just hope it can be fixed
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Re: Please Help!!
theres no number on the board. its of a fm transmitter. Chinese i think it is.Last edited by StevieG; 08-15-2012, 09:21 AM.Leave a comment:
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Re: Please Help!!
Top Part of board....Leave a comment:
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Re: Please Help!!
RD15HVF1 RF Power Transistor
The thing is most of the track as come off as you can see in picture. i gave it to a mate who said he could fix it and ended up coming back looking like that.
he burnt the tracks with the soldering iron and took the track off. i just can't see where it joins as im not good at this sort of thing.
[url]http://www.ebay.com/itm/2pcs-MITSUBISHI-RF-power-MOSFET-Transistor-RD15HVF1V-/330590931984?_trksid=p4340.m1850&_trkparms=aid%3D222002%26algo%3DSIC.FIT%26ao%3D1%26asc%3D11%26meid%3D13454...Last edited by StevieG; 08-15-2012, 08:48 AM.Leave a comment:
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