Toshiba Rt-8290s aka bombeat 12mkiiBelt replacement
Posted 20 September 2014 - 08:55 PM
When I opened up the box today I found a broken belt inside. It appears to need to go around one of the heads, but I can't find a motor or anything else to attach the belt to! Does anyone have a photo of what is should look like? If not can you help in anyway to describe what I may try next? I have searched the internet endlessly.
Also, the second belt is wrapped around the other tape head and it routed to a "spindle" located under the tape counter. This belt still works and it turns the head and tape counter. I wish this belt broke instead! It is extremely loose though and I will change it out while inside. See photo.
I'll also add deoxit 5 to the pots while it's open. Are there any other preventative maintenance items you recommend?
Also I just won a prosonic pqr-9250 on eBay. Should be getting it in a week....my second box! My collection may be small but my tape collection is vast ;).
Also what is the deal with the teac reel cassettes? Are they mostly for aesthetics, cause they do look good! Why $50 for a single tape? What are they used for?
This is a lot of questions, but whatever you can answer is extremely appreciated.
Posted 21 September 2014 - 06:08 AM
Whoa - another member from the Wu-City???
Pics will help big time. I'm not familiar with the model, but I'm sure plenty of other members are.
As for the reel cassettes, there are so many manufacturers with various levels of quality. If you're talking about the one with the aluminum housing and interchangeable reels, that's a pretty good price.
I have loads of belts, but they're in variety packs, so I don't know the exact sizes. PM me if you need a couple (I've belted tons of decks).
Posted 21 September 2014 - 03:14 PM
If you got any to sell, I would def buy them. I'm hoping that the store in needham can help me replacement my belts....or then I don't know what to do. Let me see if I can host a picture.
Posted 21 September 2014 - 03:21 PM
In the second photo there are two spindles that both turn when I get play or FF/ RR (I point to one of the in the photo). I assume these extra two belts may go around these, as they don't currently serve any purpose.
Posted 21 September 2014 - 04:19 PM
I could give you something for your efforts. pm what your into. I do have the following 5 cassettes I would give you.
Cappadonna the pillage
2 live crew the real one
Memphis bleek coming of age
The MADD rapper tell em why u MADD
Deep cover album from the motion picture.
These are cassettes I have no need for...but maybe they interest you some.
I would LOVE some help. It could be as quick as needed.
After living in Sam Francisco / Oakland, i feel like I live in the witness protection program out here. People are very insular and haven't many people.
Posted 21 September 2014 - 04:20 PM
I'm very interested in the sharp gf series of boxes.
Posted 22 September 2014 - 03:19 AM
Looks like the other 2-3 belts will be on the back side of the deck. In most cases, the drive belts are behind the deck while the counter belt is in front.
Looks to be a very typical layout. Being an auto-reverse unit, the main belt will drive two flywheels - one inside the belt, the other outside.
Don't order any belts yet. Like I said, I have tons.
Posted 22 September 2014 - 04:03 AM
Those spinning spindles are the capstans - see here for a good terminology discussion - http://en.m.wikipedi.../Tape_transport
The capstans do not have belts directly attached to them but the reverse side of them usually have a flywheel that takes a belt from the tape motor. I don't have an autoreverse deck, so likely they may be different again, but all the drive belts will be on reverse of the mechanism your photographs show, as superlew said
Unfortunately, this requires a bit more dismantling of the whole deck mechanism from the innards of the box ... just be careful you are removing the mechanism mounting screws rather than screws that hold the mechanism itself together, as usually all it needs is to remove the whole mechanism and flip it around and then some more pics taken to get some further advice here from members as to which belt goes where etc.
Let us know if you can post more pics of other side of the tape deck mechanism - hope this helps.
Posted 22 September 2014 - 06:49 PM
Posted 22 September 2014 - 06:59 PM
Posted 25 September 2014 - 07:41 PM
Appreciate the help, and his knowledge.
Posted 26 September 2014 - 03:33 AM
I'll post a pic of the belt routing later today. It's actually a pretty easy deck to work on. The belt tolerances are pretty stingy, so there was a lot of trial and error to find just the right combo. Once the belts were installed, the auto-stop kept kicking in when a tape was inserted and played in reverse mode. The culprit was an old piece of gooey belt that was stuck to the back side of the reverse spindle. Without a tape it would chug along, but between the belt goo and a 90 min. cassette, there was enough resistance to engage the auto-stop. Once the goo was discovered and cleaned up, it did exactly what it was supposed to do.
It's a neat deck, auto-reverse, continuous play -pretty cool for a mechanical deck.
What I learned: Very stingy belt tolerances; Very sensitive auto-stop mechanism.
Other than that, it's fairly straight-forward.
I'm sure Mike (Matche) will want to post pics too, when he's back in town.
Edit: No problem, Mike (I saw your post after I posted this reply - it's still very early )
Posted 26 September 2014 - 03:30 PM
Posted 26 September 2014 - 05:03 PM
Here's a good look at the front of the deck:
SANY0967.JPG 90.79K 38 downloads
SANY0964.JPG 72.78K 44 downloads
SANY0965.JPG 64.48K 37 downloads
Here's the label inside the back case. There's a similar label on the front case too. Both were molded on the same date.
'Lot o' chemicals involved in the manufacturing of a box.:
SANY0968.JPG 65.79K 43 downloads