Wonderful. My stepson has one of these he using on work sites in the tropics here in Australia.. Pretty sure this will fix it. Parts ordered. Wonderful video. Congrats!!
Thanks Mike. If you still have problems give me a shout as I've repaired 2 of these with similar faults but different causes. Check my other video just in case it's the other fault.
Hi Mick. Do you think it is possible the manufacturers intentionally drive things on the limit because they know they will fail, as they do with LEDs to get maximum brightness to enhance sales
Hi mate I have the exact same radio but the black High Voltage diodes on mine have rusted legs has yours got any information on so I can order two. Thanks any info would be great
Awesome video yet again.. so if you had just changed the zennor diode would that have fixed it ? have you repaired one yet which doesnt work on battery but does on 240 ?
Thanks 👍If I remember right it was the volume control IC got fried by the faulty zener (hopefully this is the right video as I've fixed two of these) The other one was a faulty transistor for the 240v switch over which seems to be the opposite of the fault you describe although it may be useful still as I'm sure I work out where different voltages go.
Really interesting video - and you got to the solution eventually. However, you could have saved yourself some time by noticing in the datasheet for the SC7314 that the absolute maximum supply voltage is 10.5V, so clearly there was an issue with the supply that blew up the chip and also overheated the supply series resistor. Tracing this back to the short circuit zener in the regulator circuit would have saved you from suspecting the replacement SC7314 ICs from China. I think these were actually ok - if you had checked the datasheet for the SC7314 you would have seen that a resistance of 450 ohms between pins 1 and 2 was expected - the operating supply voltage is nominally 9V and supply current 20mA. 9 / 20mA = 450 ohms. Then you would not have had to substitute the SC7314 with a different device. Anyway, well done for solving it - reverse engineering is tricky!
Thanks Steve 👍yes I honestly thought the 450 ohm wasn't correct. Thanks for the explanation. I've had fake chips or faulty chips from Aliexpress before which is why I thought it wasn't correct. The other device is exactly the same pinout and similar spec if I remember correctly. Yes reverse engineering is tricky. Not sure if you saw the FLIR thermal camera I repaired? I've also done it with software on here a few times. Check out the medical ultrasound scanner, or the solar inverter video called no password no problem. You might find those interesting 👍
@@BuyitFixit Hi again - thanks for your reply! Much appreciated. I should have added extra thanks to you as your video serves as an excellent intro to repairing this particular model as I look to be working on one soon - invaluable help for me. I do absolutely understand your suspicion about possibly fake chips from AliExpress - always in my mind when I have to revert to that as an option. Thanks for the suggested videos - I will definitely check them out. I am an electronics technician and really appreciate the different approaches others have to their repairs - broadens my way of thinking. Thanks again, and all the best!
Hi. I have the same radio JSR dab+ never used outside only in the house and not moved. All of a sudden the dab signal keeps dropping out making it not possible to listen to. Many thanks for your interesting videos.
Thanks 👍I'm not sure what could be causing the signal problem. Are any other DAB radios having the problem? Could it be interference from an external source?
Unfortunately not, the speakers would only be rated to take a certain amount of power. You would need to fit a larger (or external amplifier) with some larger or external speakers connected to it.
Hi, sorry I don't actually run a repair shop. My video's are to help you to be able to repair stuff yourself. If are wanting to have a go yourself I should be able to help or I can offer advice.
The part that I used to fix this radio is this one here: www.ebay.co.uk/itm/293243389191 It's a PT2314 which is the same as the original SC7314 just by a different manufacturer as the SC7314 I received seemed to be fake. But before ordering parts I'd check what power is going to that chip. Is the 22ohm resistor burnt? I fixed another radio with a SIMILAR issue, but it was actually a different problem. The problem on the other radio was a relay not clicking in due to a blown transistor on the power supply. Do you hear a "click" from a relay when you turn the radio on when plugged into the mains and you turn the power switch on the front on? If so then that transistor would appear to be working ok. Hope that helps!
Hi, Just got the defect radio in the mail today, got similar error l Ike the one in the video, freezes When turning on Volume. It does make a clicking Sound When turning Volume. Could it just be the pt2314?
Too Bad you Don't Have A Magnetic Dish. They Realy Come In Handy. Cause when I'd Take Something Apart Got So Tired Of Loosing Screws. Then I Seen One Amazon I Thought I'm Getting One Of Those. & Now I'm Glad I Bought It.
Thanks for the suggestion Roger. I actually do have one, but normally use it when working on the cars or tractors. The blue mat I use actually has magnets built into some of the compartments around the edges (I just keep forgetting to use them 😂😂😂😂).
so many times companies use borderline acceptable components to save a penny and hence they fail prematurely. Great repair.
Thanks 👍
Wonderful. My stepson has one of these he using on work sites in the tropics here in Australia.. Pretty sure this will fix it. Parts ordered. Wonderful video. Congrats!!
Thanks Mike. If you still have problems give me a shout as I've repaired 2 of these with similar faults but different causes. Check my other video just in case it's the other fault.
A nice in depth fix, grand job 😊👍
Thanks 👍I did another one for a friend which had a different fault too 🙂
Great fix as always, keep up the good work. Very informative
Thank you Scott!
Hi Mick. Do you think it is possible the manufacturers intentionally drive things on the limit because they know they will fail, as they do with LEDs to get maximum brightness to enhance sales
I'm not sure mate, I'd suspect sometimes they do, like in LEDs as you rightly said.
What is your opinion of "power screw drivers?" I find mine to save a bunch of time and they (i have 2) do not over torque the screws either.
I've never been a fan of them, I always like to feel how much pressure are on the screws. Perhaps I'm just old and stuck in my ways 😂😂😂😂
Fascinating -thank you for sharing
Glad you enjoyed it👍
Hi mate I have the exact same radio but the black High Voltage diodes on mine have rusted legs has yours got any information on so I can order two. Thanks any info would be great
I'm not sure which diodes you mean, you can send me a picture at the channels name at out look dot com
Awesome video yet again.. so if you had just changed the zennor diode would that have fixed it ?
have you repaired one yet which doesnt work on battery but does on 240 ?
Thanks 👍If I remember right it was the volume control IC got fried by the faulty zener (hopefully this is the right video as I've fixed two of these) The other one was a faulty transistor for the 240v switch over which seems to be the opposite of the fault you describe although it may be useful still as I'm sure I work out where different voltages go.
cheers. I'm looking to buy a radio and I've seen 3 for sale now work on 240 but not on 18v.. keep up the good work 😊
Really interesting video - and you got to the solution eventually.
However, you could have saved yourself some time by noticing in the datasheet for the SC7314 that the absolute maximum supply voltage is 10.5V, so clearly there was an issue with the supply that blew up the chip and also overheated the supply series resistor. Tracing this back to the short circuit zener in the regulator circuit would have saved you from suspecting the replacement SC7314 ICs from China. I think these were actually ok - if you had checked the datasheet for the SC7314 you would have seen that a resistance of 450 ohms between pins 1 and 2 was expected - the operating supply voltage is nominally 9V and supply current 20mA. 9 / 20mA = 450 ohms. Then you would not have had to substitute the SC7314 with a different device.
Anyway, well done for solving it - reverse engineering is tricky!
Thanks Steve 👍yes I honestly thought the 450 ohm wasn't correct. Thanks for the explanation. I've had fake chips or faulty chips from Aliexpress before which is why I thought it wasn't correct. The other device is exactly the same pinout and similar spec if I remember correctly. Yes reverse engineering is tricky. Not sure if you saw the FLIR thermal camera I repaired? I've also done it with software on here a few times. Check out the medical ultrasound scanner, or the solar inverter video called no password no problem. You might find those interesting 👍
@@BuyitFixit Hi again - thanks for your reply! Much appreciated. I should have added extra thanks to you as your video serves as an excellent intro to repairing this particular model as I look to be working on one soon - invaluable help for me. I do absolutely understand your suspicion about possibly fake chips from AliExpress - always in my mind when I have to revert to that as an option. Thanks for the suggested videos - I will definitely check them out. I am an electronics technician and really appreciate the different approaches others have to their repairs - broadens my way of thinking. Thanks again, and all the best!
Hi. I have the same radio JSR dab+ never used outside only in the house and not moved.
All of a sudden the dab signal keeps dropping out making it not possible to listen to.
Many thanks for your interesting videos.
Thanks 👍I'm not sure what could be causing the signal problem. Are any other DAB radios having the problem? Could it be interference from an external source?
Hi, I’m trying to find a circuit board for one of those radios but I can’t . The radio is a hob site Milwaukee 289020. Thank you.
I doubt you'll find one (unless from a second hand unit). Milwaukee don't seem to sell parts for them.
i'm not sure how you fixed it?,did you replace that chip?
Yes, and a resistor (if I remember as it was a while ago) 👍
The sound on this is easily overcome on the worksite.. any ideas on how to boost the lousness
Unfortunately not, the speakers would only be rated to take a certain amount of power. You would need to fit a larger (or external amplifier) with some larger or external speakers connected to it.
Great job. Looks like your chip that you ordered were fakes??
Thanks 👍Yes, that was what I thought too!
Hi, would you be interested in having a look at my Milwaukee radio it is doing exactly the same as what is in your video. Thank you
Hi, back side, torx or Phillips?
Torx and a VERY long one. I had to buy an extra long torx specifically for this.
@@BuyitFixit ok great 😁 I have ordered a set of 6 250mm screwdrivers
Hi again, I Watch Your videos Almost everyday 😁 Great work, much inspired
Thank you 👍comments such as yours are what inspires me to keep producing videos. Thanks again Frode Molland👍
@@BuyitFixithi what size of torx driver do you need for the fixings deep in the radio
This exact problem has happened to my Milwaukee radio today would you be able to fix it?
Hi, sorry I don't actually run a repair shop. My video's are to help you to be able to repair stuff yourself. If are wanting to have a go yourself I should be able to help or I can offer advice.
If you have a link to the parts you bought it would be really helpful?
The part that I used to fix this radio is this one here:
www.ebay.co.uk/itm/293243389191
It's a PT2314 which is the same as the original SC7314 just by a different manufacturer as the SC7314 I received seemed to be fake.
But before ordering parts I'd check what power is going to that chip. Is the 22ohm resistor burnt?
I fixed another radio with a SIMILAR issue, but it was actually a different problem.
The problem on the other radio was a relay not clicking in due to a blown transistor on the power supply. Do you hear a "click" from a relay when you turn the radio on when plugged into the mains and you turn the power switch on the front on? If so then that transistor would appear to be working ok.
Hope that helps!
I just got to work and interestingly i turned it on and it just started and works fine again I don’t have the problem like I had yesterday
Hi, Just got the defect radio in the mail today, got similar error l Ike the one in the video, freezes When turning on Volume. It does make a clicking Sound When turning Volume. Could it just be the pt2314?
Too Bad you Don't Have A Magnetic Dish. They Realy
Come In Handy. Cause when I'd Take Something Apart Got So Tired Of Loosing Screws. Then I Seen One Amazon
I Thought I'm Getting One Of Those. & Now I'm Glad I
Bought It.
Thanks for the suggestion Roger. I actually do have one, but normally use it when working on the cars or tractors. The blue mat I use actually has magnets built into some of the compartments around the edges (I just keep forgetting to use them 😂😂😂😂).
Heya, chips by ali only wen you have a trust wordy supplier.
@@Dutch_off_grid_homesteading Yes, I seem to have had a few fake items fro Aliexpress lately.
no sound
Very single Milwaukee tool I have is junk!