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A Nightmare Of The SHARP GF-777 An Endless Cassette Deck Fix
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- เผยแพร่เมื่อ 31 ม.ค. 2019
- Countless hours of work bringing the SHARP GF-777 back to life was a very painful memory for me.
[WARNING] This video is very long. If you watch through the entire footage, you may feel the pain and frustration that I felt in the course of the restoration.
The owner of the boombox is, of course, Pedro the boombox collector. He brought me this monster in the summer of 2018. One of the speakers was damaged, the cassette deck door hinge was broken, dusty controller and scratch noise, etc...
He wanted to paint it with his favorite color, replace the speakers, and add Bluetooth and LEDs.
In the course of the restoration, I noticed that the double cassette deck's condition was very bad. The play speed was unstable and the sound was not clear at all. The FF and REW did not work well due to the worn out tires. This double cassette deck was mounted from the front side of the inner shell, which meant that every time I needed to test the condition, I had to remove the inner shell from the front case and mount the cassette deck from the front side of the inner shell. This shell was a T-shape which was not easy to handle at all. As you can see in the video, it was an endless fight with this cassette deck. Whatever I did, it never sounded very good. After hundreds of hours spent working, I finally gave up. In the sound test video, you may notice that the sound of the tape is very low quality, but it was the best I could do.
This GF-777 has a total of 6 speakers, and 4 woofers 6.5 inches each. The outer side of the woofers is full-range, while the inner woofers are bass to mid-bass tuned. The 4 newly replaced speakers were all identical speakers, which made the sound flatter than the original speakers. The 2 original bass woofers have a deeper sound.
Anyway, the restoration of the GF-777 was one of the most frustrating nightmares I've ever had.
Demonstration tape (Hitachi original)
Battle of Jerico
-------------------------------------------------
GF-777 Bluetooth simple wiring
goo.gl/LE5aGN
The goal to make this boombox as the Bluetooth speaker,
you need to:
1)find the Bluetooth signal input point, for this one use AUX in
2)Find the power source and reduce it to 5V
3)remove ground loop noise
Note:
1)In this mod, I used 2 sets of stepdown module (USB car charger and step down module) because of too many LEDs.
2)L, R, G signal wires were soldered on to the board of AUX in. Choose Line In setting instead of Phone In.
3)RCA female jack for the need to be capped with RCA male jack or something that set the inside switch ON.
------------
Parts list
Bluetooth receiver 4.0
amzn.to/2Qn1feL
Mpow Ground loop noise isolator
amzn.to/2GlC8DI
6 pins toggle switch
amzn.to/2PYtsZX
resistor kit
amzn.to/2KCbtCM
Assorted LEDs
amzn.to/2t6Y0uJ
Step-Down Voltage Regulator Module
amzn.to/2TwaRm1
-------------------------------------------------
Donation welcome!
I appreciate if you fund me for the new camcorder and my next youtube projects. Thanks. Teddy Hashee
www.paypal.me/...
![[UNCUT] เพื่อไทยดันอุ๊งอิ๊งนั่งนายกฯ หลังเศรษฐาถูกถอดถอน | คนดังนั่งเคลียร์ | 15 ส.ค. 67](http://i.ytimg.com/vi/SpprmDJ6QEE/mqdefault.jpg)
I am now the owner of this awesome GF-777. I love what you did with the lights and the new speakers are awesome!
Thank you for your compliments on my work! Good for you to be a owner of GF-777.
Hands down you are without a doubt the king of boombox and electronic restoration. God bless you and keep doing what you do. You should change your name to Teddy Midas because everything you touch turns to gold.
NIce naming, thank you!
Wow, you really outdid yourself on this one. That is a ton of work. Terrific job Teddy
Thank you for your compliment on my work! It was tough!
I experienced a roller coaster of emotions watching this...It turned out just fine in the end...Thanks for the ride and returning me safely
Thank you for riding the roller coaster with me! I am glad that you safely returned. LOL. Thank you for the comment!
@@teddyhashee Perfect!
You are a very strong, skilled and persistent person. I appreciate your videos very much, thank you.
Thank you for your compliment on my work!
Resurrected from the DEAD,repairing an old product is more challenging than making a new one you have a deep knowledge about this Japanese SHARP GF 777 its a Legend We had one of these in the 80s and now it's long gone cannot be repaired the technicians says,but I've seen the talent you have got GOOD LUCK.
Sir you are a great engineer. Congratulations
Thank you for your compliment on my work!
Your skill, talent and patience is amazing! Well done.
Thank you for your compliment!
I had one of these...got it in the Navy in '86. It was SO BIG. I had a very good tech go crazy trying to fix it later...RIP.
Wow, just... WOW. Watching your videos is watching a true master at work. Thank you for your dedication! Subscribed!!!
Thank you Lew_Dawg for your compliment and subscription!
good job!!, also that you hurt your head to find the failure of the deck's, but it was worth the hours, time, perseverance and patience to go very well, in addition to the component speakers was much improved the bass. excellent work teddy. Greetings from Chile and also thanks for teaching to restore eighties stereos radios.
Thank you for your compliment on my work. It was a long journey for me from the start to end of this restoration. But as you said, I learned many things from this one. There are tons of 80's monsters out there, and I hope many of them will be saved by someone;s hand!
thank you TEDDY for another great video, perseverance payed off in the end and it was a great job again.
Thank you for your compliment on my work!
@@teddyhashee ร้านอยู่ที่ไหน
Just beautiful !!!! Ideal colors for a powerful ghetto blaster. i like your works!!!!! respect !!! I own a lasonic trc 931,since 1989 year, I should convert it like you🤩🤩🤩
A Perfect Restoration! Looks fantastic👌
Greetings from Hungary
Thank you for your compliment!
Hell yeah... upgrade those tired speakers and I bet it sounds amazing now. Keep the old ones to put back when it goes to the museum.
Thank you for the compliment. And yes I am keeping the old speakers with me!
This guy is a master of restoration of boombox what the heck teddy how do you do that!!!!!!!!!
I love watching you work your magic sir.
Thank you for your compliment.
Hi teddy it's a joy to watch you work man but I would have thought those vintage machines would need recapping
I agree. Most of the time I do not replace the cap if both left and right sound level is normal. But if I replace the cap, the sound quality will jump up from good to GREAT. But I do not have time to work for each of them so far.
You are my electronics idol.
Just amazing!!!
Thank you for your compliment on my work!
Ken Dovich had one in the 80's.... He used to play Quiet Riot every morning from the Back of the Bus... "BANG YOUR HEAD" !
Thank you for the comment.
完美嘅維修技巧~~我小時候都有一部sharp gf-999
Thank you for your compliment!
Eso es tener paciencia en su labor......👍
Thank you for your compliment.
Amazing restoration....
Thank you for your compliment on my work!
One can only appreciate the amount of hours you pulled into this boombox! Excellent job Teddy! The muffled sound was very noticeable when you were playing cassettes - I guess there is some old and tired component in your pre-amp (before the tone-correction circuitry), most probably some capacitor. The thing is that the power amp (after aux) sounds much better when picking signal from AUX .. so it is definitely not the power amp but the pre-amp that muffles the sound .. regardless of the variation in motor speed, that is.
In another of your videos I've seen you have a bunch of all kinds of belts .. where does one buy those belts? And where did you buy that sticky plate that you used to stiffen the case? What is that called in English?
Hi, Nicolae. Thank you for the great input. Next time I may look into the pre-amp parts you mentioned whenever i have some muffled sound problem. Great input.
The drive belts, I buy time to time from seller on ebay, or other online shop.
I buy assorted belts set, mostly made in China. Some of them good, and some bad.
Also I used to buy belts from Germany and it was a great quality one, but they suddenly stop selling belts.
When it comes to the flat belt, there are sellers who are selling turntable needles, and they also have a different type of good quality flat belts. They will cost than assorted one, but works perfect.
Finally, plastic bonder syringe like thisamzn.to/2XBJucr
It will enforce the strangeness of the repaired parts.
You can find many of them from many different company.
@@teddyhashee thank you for the information! I'll certainly look on Ebay for belts. Do you happen to know where I can buy a test tape? I looked for such a tape on Amazon and Ebay to no avail..
I bought mine from here
www.duplication.ca/audio-cassette-speed-calibration-test-tape.html
Price is fair, but shipping is a little expansive though.
Very beautiful video radio Sharp
Thank you for your compliment!
Excellent job as usual and very brave taking on that beast. Did you consider upgrading the power amplifier with a class-D to push those modern speakers harder?
I did not replace the amp to the more powerful one this time, but in the future, I may do it!! Thank you for the suggestion.
after the chassis was painted, how was the lettering put back for each switch and knob? definitly great work on this unit.
I would love to know that too - seems like an amazing job!
That's a great job. You have my admiration.
Thank you for your compliment on my work!
Found this from our childhood, in Vasant Kunj
1:29:48 Incredible moment... !!! You're the best.
Very Very Good job! Congratulations!!!
Thank you for your compliment.
patience,experience, top job well done!
Thank you for your compliment!
Hi! Have the same device, a bit of a nightmare came up, while i was trying to change a belt to the deck 2. I put one 4 pin cable on the wrong spot (i know, my bad) and then both decks stopped working :( any ideas where i should start looking the problem ??
Already checked both of the fuses and they are Ok. The 2 pin yellow cable which leaves behind the deck buttons is power ? Might be the issue on it ? Radio still works but decks don´t.
LOVE this one Teddy!!.
Q: do you find big diff with new speakers, & ever have clearance issue w big magnet. Have to rewatch on higher speed, missed painting of the face.
Hi, Bobby. The original 6 speakers were contained with 2 heavy duty bass speakers in the center. When I tested sound with original speakers, the all range speaker was not so impressive, however, this bass tuned speakers were outstanding. After replacing the speakers to new one, I wanted to have more heavy bass sound like original one. Other than this, there was no problem for installing new one.
Как всегда увлекательное видео ! У меня есть 777 в идеальном состоянии, хороший аппарат.
добрый вечер,этот аппарат можно купить?у меня есть два шарпаGF7850 хочу 777aliexpresможно заказать.просто я фанат шарпов80х.
Wow, GF-777 in perfect condition! I envy you!! Enjoy your great sound from 777!
Thank you Fara on Aziz for the comment.Hope you will be able to find your own 777!
Hi great work next can you tell me if the new speaker sound better then old one as might put them in my sharp gf 767 once again great job
In my opinion, original is much better than new one.
beautiful sharp, I would like to appreciate your hard work
Thank you for your compliment on my work!
Amazing job.
Thank you!
It always NEED much work/hours& nerves on a vintage device like this if it should play almost perfect again.... I spent a total of weeks in a row since i reparing things... :-/
Thank you for the comment. You have been working on something right now! I am sending hearty cheers to you!
Great Job. Would like to know.. Why do you approach the de-magnetizer in the way you do to the heads ? thanks
That's how I learned how to use De-magnetizer. From far away to the head, slowly movement, and never touch the head as well as metal around the head. Wave 4 to 5 times in front of the head, then move backward slowly in order not to damage the head by the strong magnetic force.
Getto Blaster and very nice sounding stereo
Thank you for the comment!
Awesome work. 👌
Hello, I always follow your work,congratulations You are very good. I'm restoring a Sharp gf 767 and I'd need some advice. I remade the rubber, the deck transmission wheels and changed the rubber straps, restored 2 springs and cleaned everything. When I start the 2 decks, they work for 3.4 seconds and then they stop,as if the tape is finished...how do you advise me to intervene ? Thank you!
Probably auto-stop is kicking in. It means one of your reel is not spinning well when you play or FF/REW.
@@teddyhashee ,tank you my friend!
Yup! Those tape deck parts were so hard-headed.
Thank you for the comment!
@@teddyhashee Your welcome
muy buen video yo tengo uno que me compre desarmado quisiera regresarlo a la vida como salio en sus años y ponerle esas luces color azul y Bluetooth para modernisarlo un poco lastima que estoy muy lejos Saludos desde Peru-Lima
awesome job.
Thank you for your compliment.
Excelent repair!
Thank you for your compliment!
Fantastic work! I’d like to know what music you’re playing at the end from 1:28:07 onwards and for the sound test.
Amazing Job !
Thank you for your compliment!
Yess I would try to fix it but if it has a huge problem , I will not attempt or maybe I would scrap it for my new project; oh' by the way if those cassette players sound muffled try to adjust the Tape head, it has a significant screw with spring attached on it try to rotate it, there are two screws the other one is fixed while the other one for tone adjustment... enjoy
Thank you Edifier for the valuable info. I do touch the head adjustment sometime to improve the sound quality. For this 777, there are another issue from painting. The painting of the whole body including the cassette door made slight change of the touch of the head, and that was unable to adjust. Anyway, next time if I need to do the 777 or similar one to restore, I try to adjust the head if it is possible. Thank you!
@@teddyhashee Yess well you can paint it with acrylic car paint metallic , just give the spray paint one foot distance to it, so that the acrylic part will evaporate not melting the plastic
Thank you for the great info!
Increible!!!! Enhorabuena
Thank you for your compliment on my work!
Sensacional! Gostaria de comprar um bombox desses !
Thank you for the comment. Hope you will be able to find your own 777!
I was wondering, do you think those small plastic parts could be replicated using a 3D printer?
If you are talking about the white plastic parts for the FF and REW, I am not sure the 3 D printing parts would work as replacement. If I were you, I will try to duplicate it with 3D printing, then after that I would sand their surface down until to make it very smooth. It has to move as smoothly as possible.
Hi Teddy, I have same box but the tuner string is off the large wheel and small wheels I have no clue how to restring so I was wondering if you had any suggestions or videos?
You are the magic men!
Great work. My pain was when my GF 777 was stolen from a few years ago after owning it for 15 years. If I ever get another I want you to restore it but I have one question weren't those woofers you put in too powerful for the unit if I recall from way back when I last opened mine all the speakers were 10 watts equaling out to 60 watts.
Wow, sorry to hear that your GF was stolen. Hope you will get your GF777 again. About speaker, my opinion is definitely the original speaker is best much for this one. Tow center ones were for heavy base that will create more 3D sound, in my opinion.
Excelente trabajo y que mejor, en un Sharp
Thank you for your compliment!
匠の精神がすごい！
王さん、ほめて頂き感謝です。ありがとうございます。
Gerçekten çok keyifli bir iş olmuş eline sağlık
Thank you for your compliment on my work!
Great work teddy. Are u a fellow new Yorker?
Your skill very very very bestest!
Thank you for your complement on my work.
Was just like when I spent 3 days on fixing my cousin's completely damaged amplifier.
I understand how it was difficult for you to fix your cousin's boombox! thank you for the comment.
This is amazing, such dedication, not for everyone it sure became a beautiful piece of ghetto blaster that aluminium sticker you used inside is for cooling? Thank you 👍
Are you in New York? I have a Conion C-100F that needs some tuning up. Great work on the sharp and I just subscribed to your channel
I am in zip 07605, if you need me to work with your c-100f, contact me through teddy.hashee@gmail.com
Thank you!
Uau, very dificult, congratulations
Thank you for your compliment on my work.
Nice, don't like the colors but this is a client request I guess. One question, you paint the surface however how did you restore the labels for knobs? In the 80's there where scratch-on letters but isn't available anymore. Any exposure possible to a 'secret' how to do this? Thanks for any answer about this.
When the owner painted body, he also created labels by printing it onto the thin plastic and attached them. So the position of the labels were different from original position. So it wasn't good looking when you look them in closely. However, I saw another boombox that was done by the professional with using hydro dip painting method, it had all exact same labels transferred onto the body. I guess it was printed on the transferable sheet and put each of them as exactly same as original. Probably it costed more than a thousand just only hydro dipping and labels.
Hey teddy another genius restoration WOW. Are these Sharp boombox problematic to fix I remember the other one you restored this one seemed like triple the work I wouldn't want to know what you charged for this one lol. Did the new speakers make a big difference in sound or are they just as good as the stock sharp. Great job
The sound of the speaker, for me original bass speaker (2 of them in center) has much deeper sound than the new one. Those original bass woofers were tuned into especially heavy base. So I like original speakers sound, that's my honest opinion. Thank you for the great comment always!
@@teddyhashee I think the modern speakers probably need more power to make them sound good?
love watching your video
Thank you!
I saw this video 3 times now...You did a heck of a job! I want to let you know that i may need you to work on my Gf 777...i will have it in two weeks...it has a few issues
Thank you for your compliments on my work. But I am fully booked with restore work that I can accept new order right now.
@@teddyhashee ok ..no problem but can i email you with questions that could help to know what to do? Thank u
Hi great video do you own your own boombox which is your favourite.?
Wow thats look amazing man nice work. If thats not retro i dont know that is dame nice thats awesome
Thank you for your compliment!
Sos el mejor. amo tu trabajo.
Thank you for your compliment!
Great job! Where did you get the hardware for mounting the tweeters? I'd like to upgrade from the piezos in my GF-767.
how do you paint the face without painting the writing ?? PLEASE REPLY
Великолепно
Thank you for your compliment!
I fast forwarded and skipped a lot. Great video! By the way, you were putting in shiny pieces of padding inside the shell. What was that?
tell me the time of the video please.
approximately 55:34 - 56:13 - I am guessing those are resonance/damping pads Teddy fitted into the case to reduce vibration/rattle from the speakers when the volume is turned up and the unit is all assembled.
Muy buen trabajo, quiero tener una asi
Thank you for the compliment!
Bonjours pouvez vous me dire le nom du groupe de musiciens et la chanson merci
Teddy Hashee, normalmente cuánto tiempo le dedicas al arreglo de un ejemplar tan escaso y bonito como ese, o lo haces por tiempos, un abrazo!
for like this one, 40 hours average. Thank you for the comment.
جمييييل .😘جدا .😍استمر انا من متابعين. 🤩
Thank you for your compliment!
Welldone amazing boss
Thank you so much 😀
KUDDOS 77 WITH LOVE
very good job you are the best
I'm flattered. Thank you for your compliment.
Bonjours j'ai le même radio cassette et les mêmes problèmes peut tu m'envoyer de l'aide bonjour chez vous.
perfect!!!!!
Thank you!
我擁有一台GF-777，遺憾的是除了音量旋鈕還在工作以外，其他的旋鈕都已經失靈或不再工作了。另外我的這台GF-777左聲道聲音正常右聲道聲音小，這個問題困惑了我很長時間，至今仍未找到解決方法。
私はGF-777を所有していますが、残念ながら、ボリュームノブがまだ機能していることを除いて、他のノブが故障しているか機能していません。さらに、私のGF-777左チャンネルサウンドは正常で、右チャンネルサウンドは小さく、この問題は長い間私を困惑させ、まだ解決策を見つけていません。
It is most difficult to find out what is the reason one channel has weak or almost no sound. You need to follow the signal from source to output, and need to pinpoint the cause. Take a time enjoy your restoration.
Вид конечно как для попугаев..... Оригинал выглядит очень приятно.... А это (((( дело вкуса
懐かしいです。４０年前に作っていました。
広島より全世界に輸出していました。（日本名 GF－９９９）
当時で１２０、０００円くらいでした。
こんにちは。コメントありがとうございます。シャープでGFシリーズを制作されていたんですね。シャープのラジカセはそのデザインと音の良さで今でも大人気です。分解して中を見たときに中央のベース用のスピーカーがサイズがそれほど大きくない割に低音がしっかりと出ていることに感動しました！
Hola sinceramente eres el mejor saludos stereo cassette desde austin texa
Thank you for your compliment on my work!
Teddy where did you learn your expertise?
Learned from my own mistakes and a lot of try
@@teddyhashee your work is amazing keeping boom boxes alive.preservation st its finest!
Good job
Thank you for your compliment on my work!
Thank you sir
I have sony vx 555 panasonic sa vk 950 national rx cw 55
Great!!
Hope I don’t have to work this hard for my $25 one
В юности я мечтал о таком магнитофоне))).Вот это ты по мучился дружище с кассетными деками))!!!.Вопрос,эти магнитофоны тебе приносят ремонтировать или ты сам ищешь ради интереса восстановления?С уважением из России!Молодец!
Thank you for your comment. Hope you will get your own boombox from 80's and enjoy the music, feel the nostalgia again.
@@teddyhashee Спасибо!У нас такие магнитолы-раритет,большая редкость,учитывая что уже сейчас просто выбрасывают DVD-player,не нужны.У меня есть живая магнитола JVC PC W-222,стояла на шкафу,пылилась,покупалась в 1997 году.Добавил просто AUX-вход,теперь слушаю интернет-радио.Успехов в дальнейших работах!
eres un maestro
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Indeed a nightmare, - to watch that is !
42 interrupting ads all together ruined the otherwise excellent tutorial !
What are these worth? Found one, but he wants $900
i wish i could do that fast
Thank you for the comment.
Super Duper Dope
Thank you for your compliment on my work!
压带轮要更换，喇叭不应该换。
Whaooooooo...😨.Fantastc...it's Incredible you are a wizard. ...whaooo!!!!.👏👏👏👏👏👏👏👏👏👏👏👏👏👏👏👏👏👏👏👏👏..!!!..👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍!!!😨!
Thank you for your compliment on my work.