#152

This transmitter had a problem turning on. A few components were found faulty or damaged including a seemingly clumsy repair attempt. The transmitter was fixed, and the output power was checked.

[@DeadKoby]

It's always nice to learn how problems can be solved even when there isn't a schematic on hand.

[@AbrahamAbignale]

I love the incremental methodology

[@airmann90]

Glad to see another video from you! Excellent as always

[@amirb715]

very nice repair as always. The unknown MOSFET is FDN352AP by former Fairchild Semi.

[@feedback-loop]

yes, you must be right. someone already suggested this. thanks

[@KarlAdamsAudio]

Excellent result - probably good that you didn't find the faulty MOSFET first, as you could have fixed the issue with the power switch and still had 5V on the 3.3V rail without knowing it.

[@feedback-loop]

it would be hard to miss the burned voltage regulator

[@p.j.wilkins1321]

Awesome repair, as always.

[@Darryl603]

Interesting repair. There's no explanation for the melted connector. I guess the owner's self inflicted wounds. Thank you for sharing.

[@paolomonai9511]

🎉 Hi! Nice repair as usuale. Keep up the good work. Regards from Italy.

[@OctavMandru]

I always like before I watch. Quality content guaranteed with you

[@amirb715]

I was gonna say exactly the same thing. I do that too

[@Amperekaefer]

Schön wieder mal nach langer Zeit von Dir zu hören. Ich mag Deine Videos sehr! LG

[@billspencer8540]

Great repair job

[@gordonwedman3179]

Thanks once again for an interesting repair.

[@ovalwingnut]

I wasn't SHURE™if you were going to figure this out. But who am I kidding... You R the "FeedbackLoop Whisperer" Always the best mYstery nOvel on the shelf. Thank you for the video. Cheers from So.Ca.USA 3rd House on the Left (please call ahead before stopping by)

[@Chris_Grossman]

good work 👍🏼

[@MrDubje]

Very well done, again. :)

[@kiukku890]

Q6000 is likely FDN352AP, marking 52APM (M is for datecode).

[@feedback-loop]

possible, but the datasheet shows XXXM format

[@feedback-loop]

I found a photo of this part with 52APR marking, so you are right, it must be FDN352AP. So my replacement has lower on-resistance, but FDN352AP can handle up to 30V (as opposed to 20V). The actual voltage is about 15V, so it should be fine.

[@MerlinMerlinL]

Excelent Great great work. 4.8V can fried the procesor.

[@TKomoski]

It's been awhile

[@abeleski]

like a BOSS!

[@engmcgill]

Great troubleshooting! How did you know to use a P-channel MOSFET if you couldn't identify it from the markings?

[@feedback-loop]

guess based on experience. looked fairly obvious to me

[@ydonl]

Nice! Very odd trail of evidence in this one, with those separate issues. Perhaps previously repaired by a gorilla! :-) Looks like something I would have done!

[@michaelbarakat6095]

Welcome Back 😍😍

[@jeremy.r.garcia]

Hello sir, what do you charge for a service/repair?

[@mitkothemacedonian]

Where have you been? I thought you gave up on educating folk😀

[@yurinikiforov871]

2 ой

[@SzymekCRX]

1st