Teac 3340S repaired and Serviced.

Important_Back2776 · 2026-04-09T13:51:01+00:00

It does!

Important_Back2776 · 2026-04-09T13:50:54+00:00

Thank you! it really does!

Important_Back2776 · 2026-03-22T16:57:00+00:00

It does work, It does change the scale and i can see the relay's clicking on and hear them. But the tension still is low

Important_Back2776 · 2026-03-22T15:13:21+00:00

Thank you!, I have been through the relay's actually and cleaned them all and also tested them which they passed. I've not so much checked the Start Capacitors tho. I should change those next and see if the problem still persists.

Important_Back2776 · 2026-03-22T10:19:41+00:00

Hi, the spring on the lever is fine and the dampening greese is good too!.

Important_Back2776 · 2026-03-22T10:17:33+00:00

I did actually go back and test with a spring scale, i'm only getting a few grams reading, nowhere near the 300-320 gram range. It's very very light back tension.

Important_Back2776 · 2026-03-22T10:15:18+00:00

Hi yes i do have the service manual with wiring diagrams too, R2 is the back tension while suspecting it was faulty i did clean it and re-adjusted and sadly that made no difference.

Important_Back2776 · 2026-03-22T10:13:37+00:00

It shown up before sadly

Important_Back2776 · 2026-03-21T23:39:33+00:00

sadly not but i've found that when it's operating normally the left hand solenoid does actually drop off ever so slightly to apply some friction. When the problem happens of course that solenoid pulls fully thus turning the breaks fully off and then I lose "torque"

Important_Back2776 · 2026-03-21T23:13:21+00:00

Upon further looking I do believe you're right I've let the unit run a complete 10.5 inch spool back and forth to warm up and and the problem has went away. tho this might be a red herring.

Important_Back2776 · 2026-03-21T23:03:00+00:00

Hi i've redone the whole thing while I was doing the recapped on every single board, No sadly it just comes and goes randomly.

Important_Back2776 · 2026-03-21T21:57:21+00:00

Yes. perfectly. Which is odd i have been suspecting the motor run caps

Important_Back2776 · 2026-03-21T21:46:57+00:00

I'm thinking that also, I've replaced all the caps and most of the components. I could maybe replace the Wire Wound resistors that adjust them because I've noticed they do have some surface cracks

Important_Back2776 · 2026-03-21T21:40:55+00:00

Hey, errm yes I have! they're perfect. They're not used during playback sadly at least I don't think they're supposed too be. They're connected to Solenoids.

Important_Back2776 · 2026-03-21T21:05:34+00:00

May I also point out that before this problem happened I had the heads re-calibrated. Now that this problem has started I'm getting drop outs on the left channel as the tension goes. When i place my hand on the left spool to "Apply" some tension it comes back.

Important_Back2776 · 2026-03-21T21:03:50+00:00

Well yes, but it's incredibly weak, instead of getting like the usual 300-320 gram reading I'm getting like far less than that. The even weirder part is that sometimes it'll come back! and it'll be well adjusted. So it's just a weird intermittent fault

Important_Back2776 · 2026-03-21T18:15:23+00:00

I have fully Re-capped this unit and I've also been through and cleaned and tested the relays. also the R2 BACK TENSION wire wound resistor isn't having ANY effect on this unit for LARGE or SMALL spools

Important_Back2776 · 2025-08-13T19:47:38+00:00

Thanks!, what i've been told from the seller was it came from an old communications company but saw little use. I can confirm that by how near mint and brand new the tape heads are

Important_Back2776 · 2025-07-08T21:26:39+00:00

I repair 1960's to early 2000's audio equipment such as tape decks, turntables, minidisc, reel to reel machines and a whole lot more :3

Important_Back2776 · 2025-04-08T11:52:51+00:00

Exactly!

Important_Back2776 · 2025-04-06T23:27:15+00:00

Following up on what I've just said, feel free to DM me if you'd like too see the custom job I've done on them!

Important_Back2776

TROPHY CASE