Bammel TV Technology Services
/ By John Doba / TV repairUnusual Product RepairsVintage Product Repairs / 0 Comments

May 16, 2017

Yup: below you will find a little “Return of the Jetsons” video post on a 1970 JVC Videosphere television repair: a CRT-style/picture-tube-type TV, in glorious black-and-white. Customer “found us on the internet” and brought the TV to us with a complaint of “low sound.” We were able to solve the problem and complete the TV repair, recapturing a moment from the customer’s youth, with a most definite coolness-cachet for his cadre o’ compadres.

JVC (Japan Victor Corporation), founded in 1927, produced Japan’s first televisions. They introduced many innovations and high-quality consumer electronics, including the VHS recorder. They began production of this space-helmet gem in 1970 and sold them into the 1980’s. I don’t recall ever seeing one or fixing one at the shop before (sadly, this one lacked the add-on alarm-clock-base feature! As they say these days: want!)

As you will discern from watching the video, the CRT (cathode-ray tube, in the original parlance; “cathode rays” are electrons) or picture tube is still going strong on this one, and looks great. CRT lifetime is variable; picture quality attenuation can begin at any time, but we’ve seen CRT’s still looking very good after 40 years or more. For older products, we often dial in a composite-video feed, to enable viewing modern video devices. CRT’s were often very hardy. While a step up from early rotating-disk mechanical televisions, the mass and weight of CRT’s eventually gave way to modern plasmas, then LCD’s; coming next: placemat/rollup screens.

Here, we diagnosed and performed a pretty simple and routine fix: some reconfig and resoldering in the audio circuit.

We do it all—including JVC Videosphere repair! For a wee bit more info on the JVC Videosphere, click here. For our TV Repair Houston page, click here. To get a Quick Quote on YOUR repair, click here. For our FAQ page, click here.

File under Can Do, and—another one bites the dust at Bammel TV.

image re video post of JVC Videosphere Repair at Bammel TV

Bammel TV Technology Services

Reel-to-Reel Repair Blowout: THREE Reel to Reel Decks Restored!

Summer 2016

Amongst our many other specializations, we’re the go-to shop in Texas for reel to reel tape deck repair.

Included in the movie clip below are two Fostex decks and one Teac reel-to-reel tape deck repairs recently performed. In the background sits another reel to reel tape deck unit, awaiting its turn in line for service and repair.

So far in 2016 we’ve repaired and restored 5 reel to reel decks, with just one unit besides determined as BER/beyond economical repair—it had heavy damage to eight internal circuit cards and, while theoretically repairable, would have incurred too much repair time and thus a high bill.

Highlights of this year’s reel to reel repairs, by model and brand:

Customer brought a Teac X-2000R with a complaint of “Check All Functions,” probably for a basic cleaning and service. Drive belt replacement and cleaning/service brought the unit back to life.

On a Teac A-4010S with complaint of “Motor Overheats,” we repaired by replacing shorted capacitors in the power supply. Unit went home safe and sound and purring nicely.

On a Teac X-10R, customer asked us to replace the drive belts/clean and service, however we found additionally that the unit would also require a new capstan motor for full functioning. Fortunately, after various efforts and vendor misdirections, we found a source, procured the motor, and repaired the customer’s unit.

Finally some words on perhaps the most challenging reel-to-reel repair we’ve done, a restoration of a very attractive Fostex G16 machine. (This is the product on the right in the movie clip below.) This unit had the special misfortune of having been in another repair shop—a circumstance we heartily disrelish, as this almost inevitably means the product will have undergone butchery and/or mutilation. In this case, the repair proved especially difficult as the prior tech—let’s be generous here and call him a tech—had re-assembled the product improperly, leaving many of the internal wiring connexions barbarously mis-connected.

Once the mal-connectivity was corrected, we found some relatively straightforward issues in the audio record circuit and these were repaired and the unit bundled up for homecoming.

Need reel to reel tape deck repair? No problem—call the professionals—that’s us.

Just another save-the-day at Bammel TV Tech Services. For our main Stereo Repair Houston page, click here.

 

Bammel TV Technology Services

How We Fixed a 24 Track MCI JH-24 Recording Deck

How We Fixed a 24-Track Studio Recording Deck

Customer brought to us an early-1980’s vintage studio recording deck: a 2″ tape, 24-track recorder—the MCI JH-24.

The MCI JH-24 is a rather legendary studio multi-track recorder—a very impressive piece of equipment, the first commercialized 24-track recorder. Many rock classics were recorded on MCI machines: Eric Clapton, the Eagles, Led Zeppelin, and the Bee Gees recorded many of their 1970’s era hits on MCI 16-track machines. The JH-24 carried an original purchase price in the $30,000 range. Even today working units are being sold online for over $8000, not including freight.

By the early 1980’s digital recording was emerging on the horizon, but many artists then, and still today, prefer the perceived “warmth” of analog recording equipment. And so we found ourselves facing a non-functioning JH-24 deck—the first one we have seen.

Assessing the Repair Prospects on the MCI JH-24, and Phase 1

Customer’s complaint was that “Tape transport won’t function.”  Our diagnostic assessment found the following:

“MAJOR RECONSTRUCTION REQUIRED in POWER SUPPLY, STANDBY CIRCUIT WORK, and SYSTEM CONTROL CIRCUIT. ADVANCED TROUBLESHOOTING PLUS REPLACE OF MISC COMPONENTS INCLUDING DISPLAY LAMPS—HOWEVER IT IS OTHERWISE IN GOOD SHAPE AND REPAIR IS FEASIBLE & RECOMMENDED FOR REPAIR.”

After considerable efforts by one of our master technicians, our repair essentially stalled out—“I can’t fix it.” Despair set in. Eventually I transferred the ticket to our other master tech and assigned him a full time assistant for this challenge. The risk was considerable: should he and his team flame out, and the unit prove unrepairable, this would represent a large loss of valuable repair production time.

Phase 2: Breakthrough

The second tech team completed the remaining work, but having done so, we ran into additional complications with this very complex product. Customer had requested that at least 16 of the original 24 tracks be restored. As it turned out, each individual recording track presented individual electronic circuit issues. Both our master techs worked on the unit, and were finally successful in restoring 23 of the 24 tracks, each of which required individual troubleshooting and circuit repair, for a total repair cost below $4000—thus saving the customer over $4000 off the cost of purchasing a replacement.

Summary: We Fixed It

Finally, we presented the triumph to the customer: a restored, functioning MCI JH-24, at just half the cost of a working replacement. Just another save-the-day at Bammel TV Tech Services. For our main Pro Audio repair page, click here. Click on the video player below for a brief video review of the final, functioning unit.

Bammel TV Technology Services
/ By admin / Audio repairUncategorizedUnusual Product RepairsVintage Product Repairs / 0 Comments

Restored Vintage Zenith Console Stereo

Console Stereo Repair

Customer recently brought to us for restoration a classic, vintage Zenith console stereo, model #MH2602M, bearing a chassis designation of 4G21 9H20. We estimate this unit was from the late 1950’s or quite early 1960’s. Customer reported “retro appeal” on the unit: it being fashionable to come to her home and listen to vinyl discs on the stereo console. But her kitty-cats had gotten out of line and clawed up the grill cloth—quite badly—one of the worst cases of pet clawing damage we have seen! BAD kitty! (Customer indicated she has subsequently declawed the little villains, or otherwise disarmed them.)

But, as pet damages go, this one wasn’t amongst the very worst. We did a restoration/replacement of the speaker grill cloth, using material supplied by the customer. Additionally we did some cosmetic treatment of some critical internal fixtures, cleaned all potentiometer controls, and repaired/re-aligned the display glass, which had slipped out of alignment.

We’ve fixed many, many vintage and console stereo units for customers. We’ll add more posts “in future,” as our British friends say.

For our Stereo & Electronic Repair Service main page, click here.

Summary: Vintage and Console Stereo Repair at Bammel TV…

Another notch in the Bammel Tech Services belt.