I've serviced electronics for 40 years, it is sad that the electronics parts industry has come to this, bogus fake parts from thieves, and it's only getting worse. Thanks for sharing, I always enjoy your videos.

An RA30H1317M1 can also be used with a bit of work.

I have a very old Kenwood 733 VHF/UHF radio. Suddenly it stopped transmitting on VHF, and after a little search on the net, I found that the module like this was the error. I managed to fix the crack in the circuit board, but after a while i failed again. Then i bought a cheap module from China, most probably fake, but I didn't want to pay maybe 100 Euro or more to fix an old radio, so I bought this cheap one. And I have to say it worked very well. I have used the radio for three or four years now, without any problems. So not every fake thing that comes from China is bad. Of course - if this was a new radio I wouldn't do it, but in an old radio it's no problem. 73 LB5JG

i got fake 3055 transistors from digikey once and they replaced them and the replacements worked fine.

Once again a very interesting video. Just a shame the module supplied was faulty.There is something very nostalgic about looking at these old through hole PCB's from this age of radio. It would be great to see a video of a lab tour Peter. Thanks Ian M5AXA

There are ways round this. The drive to the PA module is approximately 250 milliwatts at 50 ohms. This could be used to drive a linear amplifier like the microwave modules 144/100 LS switched to 1 watt input, you'll get 30 watts output. All you need to do is remove the module and just link the connections from the PCB corresponding to pins 1 & 5 together, check the alignment of the drive and pa tuning for maximum output on 145.000 MHz. In fact it actually works as a QRP radio without the linear amp, you'll need to hard switch the amp, easy with the 711 as it has a suitable socket available on the rear panel. Hope this helps.

Nice way to start a Saturday. Thanks Peter.

These power modules are a pain in the ass, that's for sure. Here in the uk, we shorten their names to MODS. It stands for MOre Dodgy Shit. They were never reliable at the best of times, despite their high price. Good and intetesting video again Peter. Warmest regards, and stay safe. Wayne & Nina 😊😊😊👍👍👍❤❤❤

Nice to see you back on the Tube, Peter :)

Peter, maybe You should to get around final mosfet and accept 3W output power from first stage. Or additionally use external amp.

Yet another great video by Peter & Olaf ... best 73s de DL6RDE / AA1KD, Charlie

Perhaps the module was one of the far more common FM or hi band PMR type and someone has swapped the covers from a more saleable item

Great to see you back Peter, great video too 😊

This is gonna be good. Always is at this channel. Thanks much

Those beatup-looking Mitsubishi modules from China vendors are often not technically "fake", but they ARE pulled from old equipment. As such there is no guarantee that they were extracted from working units before they were removed. Disassembling scrapped equipment at the roadside to recover saleable parts is a cottage industry near Shenzhen. Soldering on new leads to make the module look new is often done by unskilled labor with little static protection. Even new Chinese devices that fail factory testing are often illegally diverted into the marketplace, instead of being destroyed as the manufacturer has ordered.

Good evening Peter, always interesting things on your channel! regards from Italy

Great work peter

Thanks Peter👍🏻

Hi Peter, It's a shame that a used part was listed as new from China. Is it possible to repair the failed unit? If only that black goop was not on the component so it could be identified. However, those components could be obsolete. Stay safe. 73 WJ3U

i have one 711 whith the same problem.. i solve it by modding tra faulty module.. i replace the final transistor whith a 2n 6084 i just have and whith some tric and c trimmers now it work fine about 15 w

Hi Peter, when I received old radios with these modules I reject the repair. It's impossible to find a new module . Thanks for your video Peter, 73s de IW0HEX Pasquale

Nice vid, Peter. Hope you feel fine? Once again a black brick..no big surprise, right;-)? First thought was a ceramic substrate crack, but this time it was more conventional. Good and fast diagnosis, good hint to check the solderposts after installing the "new" module. I hate those fake sh... crappy parts, they waste lifetime in heavy portions.. Stay healthy, Peter and 73 de Olaf

Hey Peter, thanks for sharing another Great Video!. I think you're giving that received 'new part' WAY too much cosmetic credit, that device looks like it was found in the bottom of a dumpster! Sorry this happened to you, good luck with getting a refund.

perhaps a stripping of the old heat sink grease and using modern types of grease can prevent this failure in the future.

I was caught out by fake China supplied parts just last night but they were 48 pin QFN packages. It would be interesting to see a teardown/diagnosis of the Chineese module to see what they have done to "re-furbish" the unit. I may have a used module in my stocks if it would be of use to you. I am sure I have the 10 watt version but would have to look at what I have in the 25 watt. Karl

Oh no! I hope to see a follow up video on the Kenwood TS-711. I'm not doing the repair and it makes me angry just to see you get a fake part.

your a wizard. Hope you can get a working part.

P.S. If you picked up your mic and heard two blokes on the air, and they said to you, "oh fucks sake" when all you said was "Good Morning Gentlemen" and both broke channel, that is humiliating to say the least. Bear in mind that ANYONE with a equiped scanner can hear this. WE HAVE DONE NOTHING TO WARRANT THIS TYPE OF BEHAVIOUR! Wayne & Nina (NW Ipswich) My Handle is DWAYNE NW IPSWICH. Many Thanks for your comment. 😊😊👍👍👍

Hello Peter great to see a video from you. China junk strikes again, looks like they took the cover from an original and stuck it on something else. Hope you can find a module that works. Take care 73's

What a great shame. Another item confined to the no longer repairable bin. So much technology falls to the "Throw it away and buy a new one" syndrome. I have radios from the 1930's that I have successfully restored. So much for progress!

Yes, I'll bet. But not giving up cb at any costs regardless. Sometimes you have to see the broader spectrum, and leave the bucket mouths and idiots to speak umongst themselves. We are Wayne & Nina. Usualy on ch37 or ch38 'tween 7 to 8pm 73's and thanks for your feedback. Wayne & Nina 😊😊😊👍👍👍👍

❤Jippie - a new repair video! ❤

I'm sorry you got sent a fake part. Seems that happens a lot these days. I hope the customer can understand. W Rusty Lane K9POW in eastern Tennessee

I expected you to replace the failed transistor inside the old chip or add another transistor...

I was hoping that you will take the new unit apart. Or is it worth sending it back? Also they probably bypassed a burned final transistor inside the unit, and only the driver is working. Which you also should have done with the original unit.

hi, how about RA60H1317M1A module for replacement? its look like same, but RA60 more powerful

yeah really is getting quite sad. I don't mind the pulls that some chinese do that are at least noted as such and kinda help keep things that some people throw out still out there to help people... but sadly there is a growing market and its being filled with sadness... while I dont work with the hybrids, more tranditional dip package stuff it is truly amazing how often I find just random logic chips painted with other markings... sometimes cheaper versions of chips, but lately far to often completely non-functional chips.

Hello Peter and thank you for this video! By the way - Is it possible from two broken modules make a good one? ) Just a rhetorical question )

I had a 711E a few years back. The final gave up. I order one from China, didn't work. Tried a different vendor but same out come.. Eventually ordered another on ebay with the same result.. Turns out all the Mitsubishi bricks I received where fakes.... The original units are unobtainable..... My advice.. Sell your TS711E/A before it turns into a door stop...

Hi Peter can you advise me on my own ts711e..problem is when you switch it on you get no receive audio. Occasionally upon switch on the receive audio will sound and everything appears fine but after so long , anything from 30 seconds to 30 minutes the audio just cuts out…any ideas if it could be fixed ? Thanks so much for your videos , enjoy them very much.

A lot of fake junk comes out of China... What was that black goop on top of the output transisters in the PA modual? I have never seen that before... Good to see you again Peter...K5AZE

Ich habe ein ähnliches Problem mit einem M67728 Modul für einen TS-790, hier liefert das China Modul aber immerhin 4W... ;-( Original ist nichts mehr zu finden auch nicht die anders gelabelten Icom Module.

YAY

I have here on my lab an identical unit (TS-711), with an identical failure AND also got a chinese 'repaired' module, with the same painted aluminum and added glue. I was able to get a refund from AliExpress at least. But the same sad end for the rig 😞

Hi Peter, sorry this happened to your customer's rig - and to you. Is there no market in stripping good components out of used radios that have maybe been written off for some reason that doesn't involve such an expensive and hard to find part? A "breaker's yard" for recycled parts that can't be sourced from reliable suppliers any more? It's a principle used in many other spheres of operation, why not electronics? Alternatively - are parts like this one maybe also used in other very different devices? Maybe even with a different part number? Are there equivalence charts of such? Maybe these are silly questions! No matter, wishing you well into 2023!

0.5W is probably what is coming out of the driver transistor inside the module, so probably only the final transistor is bad. Is it possible to change the transistor in the module? Or another similar module? I believe they had a 711 model in Japan that put out 10W, maybe that module can be sourced. I see there are a good number of them on Ebay but all are in china. Its a great radio would be sad to see it in the junk pile because of this.

What about looking for just the individual finals on the high breed unit ? Hope you at least get a refund . Thanks again

This post was a year ago. I wonder what was the outcome? did you ever fix it? Would like to know what was the outcome. 73 Mark G0NMY

Hi, i should have one somewhere....do you find it ?

On the "replacement" part you can see the depression in the base metal plate made by the screw/washer that held the module down. Therefore it's likely that it was a genuine part - it's a pull, and a faulty one at that. The unscrupulous chinese trader who sold it to you doesn't give a shit - he's got your money, that's all they care about. If they sell a dozen parts and only two people ask for their money back, they're still winning. I would love to see these fraudsters shut down, but it's not going to happen. The best that we can do is refuse to buy their dodgy rubbish. I have seen a lot of pulls and fakes packaged in those little sealed bags with the yellow anti-stat labels on. They make you think it's a brand new part, when it's far from it. Would be interesting to pull the top off that one and see what's up with it. The fact that it looks like the top has already been removed before is an alarm bell right from the start. Anyway, greetings from New Zealand and 73 de ZL1SAR.

Does someone have information on the Mitsubishi module and the output power transistor?

Wieso hast du nicht den Leistungs-MOSFET gegen einen Ersatztyp getauscht?

I am sorry about the module. Please report it as fake to youtube. Please give them a bad score. Please post seller's name here. Or it will never get better.

The module isn't fake, it's FAULTY. Not surprised 90% of the chinese components are FAKE, COUNTERFEIT, or FAULTY. Please let us know the name of the seller or shop. THANKS!

Can you repair the old module?

At 6:00 we see a test cable plugged into the board, can anyone in the community tell me what those connectors are called, I need to get some for testing an my radio as well. Thanks! ~Jack, VEG

Hello Peter. This and $5.00 will get you a nice cup of coffee. AitExpdress is showing a :new and original" M57727 module for $20.74 plus $3.53 shipping. Arrival date Nov 14th. Don't know if this helps any. Keep up the good vids!!!! Each one you do, I learn from. Thanks

charge back time

Sadly, CB RADIO in the UK, is no longer worth listening to. We have invested many bucks into this system only to be told to "fuck off" by a certain local cb radio operator. We are both new to cb communications and have been "put off" by such behaviour. This is most unjustified, and totally WRONG. It brings radio communications into a bad light and reputation. Very sad. Wayne Brill & Miss Nina Evans. 73's 😒😒😒

Dump that piece of sh*t and get yourself a Hartkit2000.

Looks like a fake part you got

CHINA. Enjoy.

This guy sums up the saying why say 3 words when a million will do,his verbal dioreah make all his vids painfull to watch!.