I wish you lived near me. I have my first HF radio that I bought new (I had junky used rigs before) a Kenewed TS-690. The PA went bad and I reported it, but had a stroke almost two years ago and I can't put it back together. I wanted to change some electrolytic caps, and align it. Unfortunately, at this point I'm unable to do so. The radio is sitting on my workbench for 2 years I would really like to try to get back on the air.
Great Peter you saved the owner a fortune as if had been going the way it was going the owner would have needed a new board goes to show what damage leaking caps can do as you say a nice old radio working again.
After seeing this video i will do my kenwood ts-50 re cap it still works very well i just didn't realise it 30 years old. Better re cap it now better than sorry. Thanks for the video Peter 73. Darren
Much love for this nice rig. Still a good radio in a compact body, worth saving it. A good mobile radio and perfect for holiday use. Nice work and a good video for sure. Still have a pile of commercial Kenwood VHF and UHF radios here, up to 110W, beside my TS14oS, that is back in service. 73, all the best, Peter. Kenwood Deutschland ist ja QRP-Revier für Dich;-)
I love your videos Peter. It is so good to have you back making videos on TH-cam! You attention to detail and explanation is wonderful. Thank you for sharing your expertise with all of us who love radio and working on radios. 73! de Nick K9XN
Excellent, totally professional. It has been a great help in the repair of one that I have in my workshop that has given me headaches. My respects and admiration for you. 73 from Dominican Republic.
Great video Peter. I have a TS-50S in my collection and I went through it almost 20 years ago and replaced any suspect looking electrolytic capacitors. You so have to be careful buying any radio from 90s... it might have been well looked after in the shack, covered when not in use, but inside it is being eaten alive by leaking electrolyte. My original TS-50S fault was an AGC circuit that was slow to settle down after the radio was in TX mode. You can certainly smell the acidic electrolyte when you heat it with a soldering iron... good to see you using fume extraction. I have also repaired several TS-450S and TS-690S radios (similar vintage) that have failed and leaking conventional electrolytic capacitors. I also have an Icom IC-2350H that was doing strange things... I ordered and replaced ALL of the SMD electrolytic capacitors (just to be sure) and it started working like new again. VK5LN/VK5ZEA
Very nice video Peter, TS-50, together with TS-450 and TS-850 (all Kenwood) have SMD capacitors leakage. Some time ago, I repaired a TS-50 with issue on TX-power; power went up and down suddenly, with no PWR controller. The problem was on ALC negative volt zone where there are some capacitors !!! All bad capacitors ! Thanks for sharing dear my friend, 73s de IW0HEX Pasquale.
I was given a tm-255 that had similar issues. C23 on the display board blew it's load. Replacing it made the radio startup but display brightness was flickering and the analog inputs were wacky. Analog supply voltage was low and wavering. Turns out the via feeding ground to the pre-driver for the analog supply on the board was eaten away. I didn't repair the via but just tied ground to c23 low side with a piece of enameled wire. Works great now. Replaced all the polarized caps on the display board and the control board with ceramics just for good measure.
whoops this bad elco problem comes back over and over again in all kind of equipment. They go faster out my stock then I can get new😯 Thanks for take us with you in this repair.
Good evening Peter. Well done again for this video! I didn't make a video but I did the same as you. Two years ago I bought a new ts-50. Knowing the esr of cms chemical caps, I changed them all. None had yet sunk! I put in very small normal non-SMD chemical capacities, the job is perfect. 73's SEB F5SSL
Hello Peter, I have owned a TS 850s from new, I was worried the internal battery was going to leak, I opened up the radio and it looked fine. It still measured 3volts, I changed it anyway. I thought that it was amazing it still gave the same voltage as the new one after 30 years. Regards Mike G4VQH
It is always good to test batteries with LoZ feature to get a better picture. Normal DMM's have 10Mohm inner resistor which is no load for a batteries even it is old..
Great video again. Thank You so much for all the work you do. I have a 50S. I'm going to replace these caps an see if it goes back up to full output. It's not lacking much maby 15w. My most favorite is my 1 owner 680s. Im the 2ed owner an still have orginal bill of sale..Love to find a nice 690s to sit beside it. Tnx again. Nice job!!
If this was an early 2000s vintage radio, there was a case of industrial espionage that resulted int a LOT of bad caps flooding the market and could be the reason. I had lots of customer equipment fail during this time frame as a result. If not, please ignore this message.
Thanks for the video, very interesting! I used to have a TS-50 back in the 1993-94 and still missing it. This rig is still taking a high place in the portable/mobile class, since there is not so many non-QRP rigs in this market. I still have another rig, the TS-130S as an antique radio and not going to sell it. It still is in a pretty good working condition, but thanks for the info on Kenwood electrolytic caps, I think I gotta take a look under the hood of my '130 now! Good luck! 73! Linas LY2H
@@PhantomWoIf Sure, I have it. Installed in my Go-Box, it makes a fully autonomous quickly deployable 100W field unit with integrated battery pack and logging computer. 73! Linas LY2H
One of my favourite TRX, still today. Replacing the Elkos is an known issue of Kenwood. But once it is done you can have fun on and on with your Kenwood TRX for another 20 years without dealing with these Problems. My Radio Doctor also installed a battery clip which makes the Replacement of the Backup Battery a whole lot easier for the User / Operator himself. Super beautiful job, Peter. I like what you doing. You are an real Tech Expert. Happy weekend and keep up good work. 73's
Nice job Peter again. If it were my radio and I didn't know how old that lithium battery was I would have just replaced it anyway. I recently checked my lithium battery in my old HP 8591E Spectrum Analyzer from 1995 and it still read about 3 volts. I changed it anyway because I was in and it sure can't last much longer anyway. Thanks for the great videos, always good! 73s
Excellent job as per usual Peter! Old electrolytic caps contain "The Devil's Juice" and account for so many faults in older equipment. Well spotted on the damaged via's, even with the aid of a microscope, not the easiest thing to spot!! Continued success Peter and stay well, 73 Brian
I've had a fair few TS-50's over the years , And they are great little rigs , They can be a real pain to work on , But when working are a very nice radio .... It would be great if Kenwood brought out the same model again but using modern parts , But keeping the style of the older rigs ... I really like the look of the older rigs , TS450, 870, 950, 850 etc ... I still have my TS-850 sat , What a great radio it still is , Even though it's old , It's still holds its own again more modern radios .... Gw0wvl 👍
Great work as always Peter, looking good too!!! I am also a Kenwood fan...looking forward picking up the ts990s in a cpl months, anything I should watch for with that one?? 73 and stay well WD8JM
Ser gut Peter. Very well done repair. Thank you for sharing your extensive knowledge with us! I just wish your subscriber count was much higher. Seems odd to me. Your videos are really good. 73 de kb7ici.
Thanks for video TRXlab.. >>What kind/brand gel-flux are you using, or recommend? (..up until now myself have used 'liquid' mildRosin/mra-flux, but can also see the benefit of having a gel-type. The liquid-type tend to float too wide around, and when touching up multiple joints in one go, all of it evaporates to quickly while touching only the first joint.) ..//Thanks gain for video TRXlab. Its very enjoyable and knowledge-increasing. //br, from norway.
hi peter great video again, thank you for making it and putting it online very much appreciated. Small question though what do you use to clean te pads with and how?
Hello Peter, hope you are keeping well... Nice video as always on ts 50. I have the same problems with my ts 50.when i'm tx on ssb the full output power fall down for a few seconds an then rising, so i suspect the capacitor.... After more then 20 years. Wath's your suggestios. Thanks in advance Peter
I have a TS50 that I used in the mobile for a while until it quit working properly. It has been in storage for a while and I hope its not too far gone to get revived, some day.
Hi Did the TM 702e suffer from the same sort of problems do you know . I also have a TS 790e that i have just taken off air for a while i am taking a break from radio for a while selling some stuff storing some the Kenwoods i am keeping for sure.
pH of baking soda is ~9 & boric acid is ~6, so it might help neutralize the leakage. I understand some electrolytics use boric acid as part of the electrolyte. Just a thought.
Back in the days it happened to be industrial espionage for the electrolyte and a wrong formula has been used for the caps. All that should be solved today...
Tantalum could work quite well. Careful though when installing them, they really don't like voltage spikes above their rated voltage and the stripes on tantalum capacitors typically are at the + side.
After careful consideration I have come to the logical conclusion that Capacitors Suck. LOL. They are a necessary evil unfortunately. Good video as always. P.S. If time question. Is that what you might call a 'hot' running radio? The temps inside are rather high due to small size?
Hallo Peter, ich habe ein KW Gerät bei dem die PLL nicht mehr einrastet, könntest Du es reparieren ? Schaltplan und Service Manuel ist komplett vorhanden...
@@TRXLab I realize that. Although our FCC says that you are making a common mistake, thinking RADIOS are mobile phones. They say "smartphone" is a misnomer, those are indeed radios. But more to the point, they all involve electronic components and circuit boards with crud on them. Or are discrete components so vulnerable? I am reminded of Kon Tiki after it broke apart, and the seawater soaked radio worked fine, after a fresh water bath and thorough drying.
Schön, dir wieder zusehen zu können! Frage mich bei all' der nötigen Arbeit, wie es zu den Preisvorstellungen einiger Verkäufer auf den Kleinanzeigen kommt. Da kaufe ich mir abseits der Nostalgie doch eher nen Xiegu G90 und werfe den nach der Halbwertszeit weg. Genauso die alten 2/70 Schinken.
Danke Bernd!. Nun die Preise die in Kleinanzeigen und anderen Plattformen gezahlt werden sind nicht realistisch. Viele ältere Geräte müssen nachgearbeitet werden. Persönlich habe ich auch nichts gegen Produke aus China. Ich benutze ja auch Messtechnik aus China und bin froh das erschwingliche Preise für hohe Qualität am Markt sind. ABER: Ich mag keine Produkete unterstützen die keinerlei Dokumentation liefern und sich auch ABSOLUT GAR NICHT um Ersatzteilversorgung kümmern. Mir ist klar das dadurch die Preis steigen würden, aber für rundrum gute Produkte zahle ich gern etwas mehr. Hierzu wäre noch sehr viel zu sagen, lässt sich hier aber nicht abarbeiten...
I like to remove the resist back from the via and bend the wire 90° to lay flat on the track away from the via hole. As sometimes the track to via ring goes open circuit as well. Also give the wire a better machenical joint.
I don't think you need a meter to check that capacitor, it was well and truly shot. The S.M.D. capacitors appear to leak at the slightest opportunity they get. You just caught that one in time or it would have eaten all the tracks around it and maybe a bit more.
I see 'spares or repair' rigs on ebay and am suspicious that they are part of a number of boxes that are passed around (at enormous prices) to people who hack around inside it with a soldering iron and little knowledge before putting the covers on and selling it again for the same ridiculous price. In other words I do not want to touch any second hand rig especially at the enormouse prices asked at the moment. Am I being realistic or pessimistic?
I think this radio needed care 5 years ago to save it rather than drastic action by a superlative operation master to save. When first showing any symptoms would have been the time to fix it by normal techs.
I have a TS-50 which is working OK.
This is a very good transceiver.
with best 73
Felix HB9ABX
I wish you lived near me. I have my first HF radio that I bought new (I had junky used rigs before) a Kenewed TS-690. The PA went bad and I reported it, but had a stroke almost two years ago and I can't put it back together. I wanted to change some electrolytic caps, and align it. Unfortunately, at this point I'm unable to do so. The radio is sitting on my workbench for 2 years I would really like to try to get back on the air.
Great Peter you saved the owner a fortune as if had been going the way it was going the owner would have needed a new board goes to show what damage leaking caps can do as you say a nice old radio working again.
After seeing this video i will do my kenwood ts-50 re cap it still works very well i just didn't realise it 30 years old. Better re cap it now better than sorry. Thanks for the video Peter 73. Darren
Great work Peter
Well done bravo my friend excellent work
Much love for this nice rig. Still a good radio in a compact body, worth saving it. A good mobile radio and perfect for holiday use. Nice work and a good video for sure. Still have a pile of commercial Kenwood VHF and UHF radios here, up to 110W, beside my TS14oS, that is back in service. 73, all the best, Peter. Kenwood Deutschland ist ja QRP-Revier für Dich;-)
Yeah absolute nice radios!! LoL ja das ist 2m qrp Entfernung
How happy I am to see you back Peter ! My best 73 to your dear friend, always enjoy your videos.
Keep up the good job, Alles Gute : Chris ha7wx
Thank you Chris very kind! All the best!
I love your videos Peter. It is so good to have you back making videos on TH-cam! You attention to detail and explanation is wonderful. Thank you for sharing your expertise with all of us who love radio and working on radios. 73! de Nick K9XN
Thank you!
Excellent, totally professional. It has been a great help in the repair of one that I have in my workshop that has given me headaches. My respects and admiration for you. 73 from Dominican Republic.
Thank you Pablo, I'm very glad if my video was of any help! 73
So glad you are back! Really missed your videos.
Great video. Nice repair.
Thanks
OMG.. I just saw you are back!!! I missed watching your videos so much!!!!.. thank you for coming back!
Thank you so much!
Another great video Peter 👍🏻 Well thought out and explained. Thanks!
Thanks for watching
First class repair job, Peter!
It is always a pleasure to watch your videos...
I learn a lot out of it!
Thank you very much 👍🏻
Thank you!
always a pleasure to watch ... a real expert ... hats off .. 73s de DL6RDE, Charlie
Thank you!
I miss you coming back. So glad your back and your looking good 👍
It's never wrong to own an Kenwood, they sound greate!
And yet another good video from Peter, thanks.
Thank you
I see new TRX Lab video pop-up, I click like! Thanks Peter!
lol thak you!
Loved watching the repair thanks for sharing it.
Thank you!
Thank you for sharing Peter, very interesting video 73's
Thank you Bob!
Brilliant as always Peter.
Thank you
Great repair Peter.. Your attention to detail is brilliant and most helpful to us part time amateur electronics guy's. 73
Great video Peter.
I have a TS-50S in my collection and I went through it almost 20 years ago and replaced any suspect looking electrolytic capacitors. You so have to be careful buying any radio from 90s... it might have been well looked after in the shack, covered when not in use, but inside it is being eaten alive by leaking electrolyte. My original TS-50S fault was an AGC circuit that was slow to settle down after the radio was in TX mode. You can certainly smell the acidic electrolyte when you heat it with a soldering iron... good to see you using fume extraction.
I have also repaired several TS-450S and TS-690S radios (similar vintage) that have failed and leaking conventional electrolytic capacitors. I also have an Icom IC-2350H that was doing strange things... I ordered and replaced ALL of the SMD electrolytic capacitors (just to be sure) and it started working like new again.
VK5LN/VK5ZEA
yeah that is so true! Thanks for feed back
Very nice video Peter, TS-50, together with TS-450 and TS-850 (all Kenwood) have SMD capacitors leakage. Some time ago, I repaired a TS-50 with issue on TX-power; power went up and down suddenly, with no PWR controller. The problem was on ALC negative volt zone where there are some capacitors !!! All bad capacitors ! Thanks for sharing dear my friend, 73s de IW0HEX Pasquale.
Thanks Pasquale! I think a similar repair on the ALC or was it AGC should be here on my channel as well...
I was given a tm-255 that had similar issues. C23 on the display board blew it's load. Replacing it made the radio startup but display brightness was flickering and the analog inputs were wacky. Analog supply voltage was low and wavering. Turns out the via feeding ground to the pre-driver for the analog supply on the board was eaten away. I didn't repair the via but just tied ground to c23 low side with a piece of enameled wire. Works great now. Replaced all the polarized caps on the display board and the control board with ceramics just for good measure.
whoops this bad elco problem comes back over and over again in all kind of equipment. They go faster out my stock then I can get new😯
Thanks for take us with you in this repair.
lol yea that is true..
Glad to have you back sir.
Thanks.
73 de PD1JDW
Thank you!
I am so happy that you are back.
Good evening Peter. Well done again for this video! I didn't make a video but I did the same as you. Two years ago I bought a new ts-50. Knowing the esr of cms chemical caps, I changed them all. None had yet sunk! I put in very small normal non-SMD chemical capacities, the job is perfect. 73's SEB F5SSL
great! Thanks for feed back
Hello Peter, I have owned a TS 850s from new, I was worried the internal battery was going to leak, I opened up the radio and it looked fine. It still measured 3volts, I changed it anyway. I thought that it was amazing it still gave the same voltage as the new one after 30 years. Regards Mike G4VQH
It is always good to test batteries with LoZ feature to get a better picture. Normal DMM's have 10Mohm inner resistor which is no load for a batteries even it is old..
Thanks for another interesting and entertaining video. 73 OM
Thanks for watching
Great video again. Thank You so much for all the work you do. I have a 50S. I'm going to replace these caps an see if it goes back up to full output. It's not lacking much maby 15w. My most favorite is my 1 owner 680s. Im the 2ed owner an still have orginal bill of sale..Love to find a nice 690s to sit beside it. Tnx again. Nice job!!
Thank you
Check the power cord fuse connections. Oxidized connections on old radios can cause excessive voltage drop and low output power.
Thanks Peter 👍🇬🇧
Great job Peter! So good to see you! Big thumbs up!
Catch ya next time : )
Thank you
If this was an early 2000s vintage radio, there was a case of industrial espionage that resulted int a LOT of bad caps flooding the market and could be the reason. I had lots of customer equipment fail during this time frame as a result. If not, please ignore this message.
Very true. Lots of counterfeit capacitors (and other components) out there.
that is the story!
Yep the Apple eMac was a victim as well as many engine management units for cars. This scandal cost the consumer a fortune.
Thanks for the video, very interesting! I used to have a TS-50 back in the 1993-94 and still missing it. This rig is still taking a high place in the portable/mobile class, since there is not so many non-QRP rigs in this market. I still have another rig, the TS-130S as an antique radio and not going to sell it. It still is in a pretty good working condition, but thanks for the info on Kenwood electrolytic caps, I think I gotta take a look under the hood of my '130 now! Good luck! 73! Linas LY2H
Thanks for feed back
Yaesu FT891 might be an alternative for you, has 32bit dsp, modulates well, is about same size of the ts50.
@@PhantomWoIf Sure, I have it. Installed in my Go-Box, it makes a fully autonomous quickly deployable 100W field unit with integrated battery pack and logging computer. 73! Linas LY2H
One of my favourite TRX, still today. Replacing the Elkos is an known issue of Kenwood. But once it is done you can have fun on and on with your Kenwood TRX for another 20 years without dealing with these Problems. My Radio Doctor also installed a battery clip which makes the Replacement of the Backup Battery a whole lot easier for the User / Operator himself. Super beautiful job, Peter. I like what you doing. You are an real Tech Expert. Happy weekend and keep up good work. 73's
So true Kirk! Thanks for feed back
Nice job Peter again. If it were my radio and I didn't know how old that lithium battery was I would have just replaced it anyway. I recently checked my lithium battery in my old HP 8591E Spectrum Analyzer from 1995 and it still read about 3 volts. I changed it anyway because I was in and it sure can't last much longer anyway. Thanks for the great videos, always good! 73s
Thanks Herbert. I'm testing Batteries with the LoZ feature to be sure that we get a more real picture..
@@TRXLab I see you brought the U1272A. Without thinking I brought the U1271A. A great little meter anyway but no LoZ. A silly mistake on my part.
Excellent job as per usual Peter! Old electrolytic caps contain "The Devil's Juice" and account for so many faults in older equipment. Well spotted on the damaged via's, even with the aid of a microscope, not the easiest thing to spot!! Continued success Peter and stay well, 73 Brian
LOL "The Devil's Juice" that is a good one! Thanks for watching!
I've had a fair few TS-50's over the years , And they are great little rigs , They can be a real pain to work on , But when working are a very nice radio .... It would be great if Kenwood brought out the same model again but using modern parts , But keeping the style of the older rigs ... I really like the look of the older rigs , TS450, 870, 950, 850 etc ... I still have my TS-850 sat , What a great radio it still is , Even though it's old , It's still holds its own again more modern radios .... Gw0wvl 👍
Yes that would be great if Kenwood launches a new one like the TS50
i wish Kenwood would make a radio in this size format again.. finding ones of this that are working and not beet up is hard.
Agreed, try the Alinco DX-70.
yes it is a nice radio
Kenwood does not buy cheap caps period!Thanks for a other great video,keep them coming!
Danke, sehr hilfreich
Danke fürs vorbeischauen
Great work as always Peter, looking good too!!! I am also a Kenwood fan...looking forward picking up the ts990s in a cpl months, anything I should watch for with that one??
73 and stay well
WD8JM
Yeah the TS-990 is a great radio...
Ser gut Peter. Very well done repair. Thank you for sharing your extensive knowledge with us! I just wish your subscriber count was much higher. Seems odd to me. Your videos are really good. 73 de kb7ici.
Thank you!
good work,,ic doctor
lol thank you Dennis
Hello, great videos, very helpful. Did the Kenwood ts-570d also suffer from leaky caps?
i have a ts50 in texas that does work fine but has a low receive. any idea where to look first?
Thanks for video TRXlab.. >>What kind/brand gel-flux are you using, or recommend? (..up until now myself have used 'liquid' mildRosin/mra-flux, but can also see the benefit of having a gel-type. The liquid-type tend to float too wide around, and when touching up multiple joints in one go, all of it evaporates to quickly while touching only the first joint.) ..//Thanks gain for video TRXlab. Its very enjoyable and knowledge-increasing. //br, from norway.
As good as new. Even better :)
good job...guys..
Radio looks really good for it's age....
yes that is true
Very nice. I wonder if that's my old TS-50
thank you! lol is there somewhere a secret marking that you know it is your radio :-)
I've dealt with similar capacitors in a deceased trip computer of my 1993 Honda XRV750. Everything is fine after replacing them.
Yeah this caps are everywhere...
great video. It almost always seams to be the caps from that vintage. What do you think of mr. carlson's low voltage cap checker?
I have to admit that I don't know the low voltage checker...
hi peter great video again, thank you for making it and putting it online very much appreciated. Small question though what do you use to clean te pads with and how?
Thank you. I'm using 99,9% ISO Alcohol...
@@TRXLab THank you Peter, wow that is 'high' grade they dont sell that at the store here lol
Hello Peter, hope you are keeping well... Nice video as always on ts 50. I have the same problems with my ts 50.when i'm tx on ssb the full output power fall down for a few seconds an then rising, so i suspect the capacitor.... After more then 20 years. Wath's your suggestios. Thanks in advance Peter
everything is possible no remote diagnosis possible with the TS50 sorry
don’t all radios from 30 plus years ago have leaky capacitors?
that is not easy to answer and not all caps are leaking acid but develop different issues.
hello kenwood ts50 usb and lsb also have a sound problem how can we solve it suddenly the sound disappears (FM-AM) normal
Peter could you neutralise the acid with a mild alkali, then rinse with water and IPA?
Well that is a good question. I'm looking already for some time after a practical solution but I'm no chemist and don't have a good answer found yet..
I have a TS50 that I used in the mobile for a while until it quit working properly. It has been in storage for a while and I hope its not too far gone to get revived, some day.
don't wait too long remember if you have leaking caps the copper will be eaten away!
Hi Did the TM 702e suffer from the same sort of problems do you know . I also have a TS 790e that i have just taken off air for a while i am taking a break from radio for a while selling some stuff storing some the Kenwoods i am keeping for sure.
All radios in the same age from Kenwood suffers from the same issue.
@@TRXLab ok thanks have to hyave a look at it then
Do you fix radios?
On the PLL board, did you only replace the SMD electrolytic capacitors but leave the through hole capacitors in place?
Thanks for the video.
The THCaps are fine in this radio so no worries here...
Good work Peter! Are the smaller electrolytics of the same form also suspect or has the issue been with the larger caps?
Hi Dino, I have tested all for ESR and those were fine.
Peter- have you ever tried baking soda to clean the acid off?
No never is there an information somewhere to be able to understand that topic better?
pH of baking soda is ~9 & boric acid is ~6, so it might help neutralize the leakage. I understand some electrolytics use boric acid as part of the electrolyte. Just a thought.
Yes sure I know the different PH values I'm looking more in how folks would use it in practice....
Your opinion best VHF UHF radio @2021?
All Kenwood are still good in many different ways.
I'm happy with my IC-9700, and my TS-2000 is still going strong.
Hi Peter, I noticed you measured the capacitor capacitance on the Der EE with 100 KHz instead of 120 Hz... Apart from that a very interesting video.
yes but as the sencore tested already an error it does not make any difference. But you are right C must tested with 120 HZ
Are the radios made today made with better Caps to keep this from happening in the future?
Back in the days it happened to be industrial espionage for the electrolyte and a wrong formula has been used for the caps. All that should be solved today...
Could you use solid states capacitors instead?
not sure what you mean with solid state but what could be uses are smd tantalum..
@@TRXLab Yeah Tantalums. I have to replace all those caps on my rig, and i want to get rid of this electrolytics at all.
Tantalum could work quite well. Careful though when installing them, they really don't like voltage spikes above their rated voltage and the stripes on tantalum capacitors typically are at the + side.
I wonder are there any of these transceivers that have have burnt out stages that could be used for spares.
not many on the market
After careful consideration I have come to the logical conclusion that Capacitors Suck. LOL. They are a necessary evil unfortunately. Good video as always. P.S. If time question. Is that what you might call a 'hot' running radio? The temps inside are rather high due to small size?
LOL yea "the logical conclusion that Capacitors Suck. " right conclusion lol
Thanks for watching. Yes it is a hot running radio...
Hallo Peter, ich habe ein KW Gerät bei dem die PLL nicht mehr einrastet, könntest Du es reparieren ? Schaltplan und Service Manuel ist komplett vorhanden...
No ultrasonic cleaner?
He is not Louis Rossmann ;-)
and additional a radio is not a computer or mobile phone
@@TRXLab I realize that. Although our FCC says that you are making a common mistake, thinking RADIOS are mobile phones. They say "smartphone" is a misnomer, those are indeed radios.
But more to the point, they all involve electronic components and circuit boards with crud on them. Or are discrete components so vulnerable? I am reminded of Kon Tiki after it broke apart, and the seawater soaked radio worked fine, after a fresh water bath and thorough drying.
i have a TS-440S immaculate , mint in original box with manuals anyone want to swap it for something i need an oscilloscope for example ?
Schön, dir wieder zusehen zu können! Frage mich bei all' der nötigen Arbeit, wie es zu den Preisvorstellungen einiger Verkäufer auf den Kleinanzeigen kommt. Da kaufe ich mir abseits der Nostalgie doch eher nen Xiegu G90 und werfe den nach der Halbwertszeit weg. Genauso die alten 2/70 Schinken.
Danke Bernd!. Nun die Preise die in Kleinanzeigen und anderen Plattformen gezahlt werden sind nicht realistisch. Viele ältere Geräte müssen nachgearbeitet werden. Persönlich habe ich auch nichts gegen Produke aus China. Ich benutze ja auch Messtechnik aus China und bin froh das erschwingliche Preise für hohe Qualität am Markt sind. ABER: Ich mag keine Produkete unterstützen die keinerlei Dokumentation liefern und sich auch ABSOLUT GAR NICHT um Ersatzteilversorgung kümmern. Mir ist klar das dadurch die Preis steigen würden, aber für rundrum gute Produkte zahle ich gern etwas mehr. Hierzu wäre noch sehr viel zu sagen, lässt sich hier aber nicht abarbeiten...
@@TRXLab kann ich absolut nachvollziehen. Genau, wie ich es bei den Preisvorstellungen nicht kann. Bleib' gesund!
Is checking ESR in circuit accurate?
Not always you really need to know what you are doing. In video #155 you get an idea what you need to look for....
I like to remove the resist back from the via and bend the wire 90° to lay flat on the track away from the via hole. As sometimes the track to via ring goes open circuit as well. Also give the wire a better machenical joint.
anybody has its own experience
I don't think you need a meter to check that capacitor, it was well and truly shot. The S.M.D. capacitors appear to leak at the slightest opportunity they get. You just caught that one in time or it would have eaten all the tracks around it and maybe a bit more.
Yes it was in the last moment...
Aus welchem Bundesland kommst du eigentlich?
The symbol looks like Nippon Chemi-Con.
I have to double check it...
👍💯
I see 'spares or repair' rigs on ebay and am suspicious that they are part of a number of boxes that are passed around (at enormous prices) to people who hack around inside it with a soldering iron and little knowledge before putting the covers on and selling it again for the same ridiculous price. In other words I do not want to touch any second hand rig especially at the enormouse prices asked at the moment. Am I being realistic or pessimistic?
I would call it REALISTIC!
I think this radio needed care 5 years ago to save it rather than drastic action by a superlative operation master to save. When first showing any symptoms would have been the time to fix it by normal techs.
LOL" superlative operation master".
Soldering electronics with the use of S-39 is really not a good idea.
I am dropping you. Not because of you, but because I will not support TH-cam and its fascist policies. Thank you for your content I have enjoyed.
Oh what went wrong?
Hi sir, pls help me to program R5F2L3AACNFP mcu of icom 2300
There are not "through", are "vias"... Small rivets on the PCB are called "VIA". TS50 is plagued with bad vias...
73 de yo3hjv
How ever as long everybody knows what is meant it is fine for me...