I FOUND IT SHORTLY AFTER THAT COMMENT LOL, It works beautifully. thank you so much for this video as it helped me bring my 414 back to life :)

Hi there The grease in the transport gets stiff over time and the rubber rollers take time to get to the capstans if they do at all . Needs to be stripped and re lubed and re calibrated

I'm also having this issue , did you fix it?

@@parker1787 Yes I did and I made a video of the process on my channel!

Sorry to be so off topic but does anybody know of a trick to log back into an Instagram account..? I stupidly forgot the password. I love any tips you can offer me

@Jimmy Marcel instablaster ;)

@Maxton Jake I really appreciate your reply. I found the site through google and Im waiting for the hacking stuff now. I see it takes quite some time so I will reply here later with my results.

@Maxton Jake it worked and I actually got access to my account again. Im so happy! Thank you so much, you saved my ass !

@Jimmy Marcel You are welcome xD

Did you fix it????

I am late to the party here but that scratchiness is just oxidation. You need a can of electrical contact cleaner. My favorite is deoxIT. He showed the breakdown of the machine and where to spray in the video. As long as you can follow the procedure and not lose anything you should be able to get it open and cleaned up. Just take it really slow and be mindful of everything you do. You got this!

I had a similar problem. I found a fix that involved replacing the capacitors related to the faders. It's a common problem apparently. I forget the capacitor value, it was available online, and they were really inexpensive.

Deoxit 5 spray will fix all that.

normal stereo tape decks have 2 channel heads. the tascam has 4 channels, you should hear both sides, eavh with Left/right of the cassette, of which one is backwards. its also high pitched, since the tascams tape speed is higher to have higher fidelity audio

you simply get a stereo tape deck for those

This unit was in storage for a very long time, and hasn't been used for at least 10 years

Finding a replacement for that transformer would probably require finding a dead 424 mk2 and taking it from there. I believe it isn't just a single winding pair transformer but actually has at least three separate voltage outputs, meaning it was almost certainly custom manufactured so you won't find an off the shelf replacement. You could, in theory, build an external power supply with multiple transformers in it to supply the voltages needed but a much easier solution would be to find a new transformer from a dead unit.

@@ThatTascamGuy ohh yeah probably... Such a bummer. But thanks alot though! Really appreciate the help!

@@zochamlianatlau-1507 Actually, now that I look through my pile of parts machines I do have a 424 mk2 with a bad transport and a dead channel on the mixer board that just happens to have a perfectly fine power board. If you're interested, and in the US (for ease of shipping anyway), I'd be happy to pass it along to you.

@@ThatTascamGuy wow thats great! But I'm a bit skeptical whether replacing my power board is enough to bring mine back to life.. anyway I definitely would love to give it a try! Can u please email me to [email protected] Thanks!

I don't know that I've ever had to replace a jack entirely on any of the Tascams I've worked on, although I have had to resolder quite a number of them because the solder joint has gotten cracked. Are you sure the jack itself is bad? I don't have a specific part number to recommend to you unfortunately, but as long as you can find one of a similar form factor it should work (although it may take some creative work to get it to anchor in place if the lugs are not in the exact same place).

I know it took a while to get back to you, but hopefully this can still be helpful. Any time there's a hum I always look to grounding issues. There are lots of sources for electrical noise inside a tape deck, so there also tend to be lots of ground connections. If one of them has gone bad or is only making intermittent connection (or is entirely disconnected) you're likely to get hum somewhere in the system. Because the hum responds to the pitch wheel I would suspect the grounding issue relates to the transport motor, there should be at least one ground line connected to the transport assembly by a lug that goes between the transport and the case and is held in place by a screw. I would check that first to make sure it is still there and making good connection. If it has become oxidized I would lightly sand its surface and the surface of the transport mechanism where it will be sitting to make sure it's making good connection all the time.

@@ThatTascamGuy Thank You for your reply I will look into it.

Very slowly, haha. I've got the VCO boards done and I'm starting on the VCF and power supply boards now, but I need to cut that footage down into a video sometime soon.

@@ThatTascamGuy ahah thanks! can't wait to see the progress! is it something difficult or just a lot of time and patience needed? also which extra tools do you need? (except for soldering ofc)

@@navrasmusic It just comes down to patience really. And time. I haven't had much time for hobbies lately, unfortunately. The actual soldering is quite easy, it's all through hole components. It's just a LOT of through hole components. You don't really need any specialized tools, just a soldering iron, solder, and some flux. A desoldering tool is handy if you screw up, especially if you solder the IC chips directly instead of using a socket, but not really vital especially if you're careful.

@@ThatTascamGuy Epic! thank you very much, and good luck!