FISHER PH-480 Boombox One Channel No Sound Issue Fixed

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This is a Fisher PH-480 boombox. It had a left side channel sound problem. I spent many hours to find out what was causing this issue.
I was able to check 3 of PH-480 boomboxes and found out that all of them had a similar type of sound issue. After the countless test and error process, I concluded that all of 3 had the same reason for its different type of sound issue.
The tone control board.
So if you have a Fisher PH-480 and need to fix the sound issue, most likely the problem came from the tone control board. So here is my two cents, whatever you do to fix the sound issue on Fisher PH-480, you want to start with the tone control board.
Enjoy my another nightmare of the restoration work.
Teddy
Demonstration tape (Hitachi original)
1) Battle of Jerico
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kuman Mega 328 Graphic transistor Tester
amzn.to/2ofwHQ1
KKmoon MESR-100 ESR LCR Capacitance Ohm Meter
t.ly/7w3XX
Auto-Ranging Digital Multimeter
t.ly/853X0
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Donation welcome!
I appreciate if you fund me for the new camcorder and my next youtube projects.
www.paypal.me/teddyhashee358
Thank you
Teddy Hashee

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Опубликовано:

27 сен 2019

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Комментарии : 89

@Imhalfamazing2U 3 года назад

I'm amazed that you got that to work. I owned on of those in the 80's and it didn't last 2 years. The JVC RC-m70, that was a beast. I still (again) own one.

@truevibecheck6927 Год назад

I have a JVC and this happened to me today I was sad until I gave it a few good hits with my hand, it working now

@Mega9830 4 года назад

Excellent work Teddy. You're the best.

@teddyhashee 4 года назад

Thank you for the compliment.

@waukee321 2 месяца назад

Very organized repair jobs. Labeling connectors, wires, etc; organizing screws with respective parts; excellent! I use my digital camera extensively to take pics before disassembly so I know how to reassemble (memory not as strong as it used to be ☺). I prefer mechanical repairs over solid state ones. Chip ICs can be a pain to find schematics for these days, let alone the chips themselves. Still have an O-scope and multi-meter. I'll work on simple transistor and capacitor amplifier issues when I have to. Not much experience fixing/adjusting/ troubleshooting radio reception, tuning caps, etc though. Fortunately never had to do that.

@radiosiesta 4 года назад

Very good work. I commend your repairs and videos.

@teddyhashee 4 года назад

Thank you for your compliment on my work!

@rahimkvayath 4 года назад

beautiful fisher, excellent repair by you

@teddyhashee 4 года назад

Thank you for your compliment on my work!

@gfeast4518 3 года назад

I just got an old garrard gsw42 3D super woofer but it’s seems like the left speaker isn’t working, not sure what to do to fix it

@TonysLawnCare215 3 года назад

You are a master electronic fix man I wish you lived near me I have a vintage crown Crown CMC-5 Integrated Micro Component System that has no sound coming out of the speakers and the tape cassette dont play rewind or fast forward

@Giondenver 4 года назад

why is there even one thumbs down... this man is a genius !!!

@teddyhashee 4 года назад

Thank you for your compliment on my work!

@waukee321 2 месяца назад

Having repaired many units, I share in the amount of time it takes (many hours), those frustrating roadblocks from time to time, but the great feeling you get when you get it all working! I can really appreciate the hard work you put into this!

@anonym-g-a-d7817 4 года назад

Very good working from You 👍

@teddyhashee 4 года назад

Thank you for your compliment on my work!

@gerryroberts662 Год назад

Does this work for 3682a boomboxes, mine is a different brand.

@lowchopr1 6 месяцев назад

Amazing, do you service other 480k for the general public? Mine needs belts please.

@marubeni4159 3 года назад

Hi, please make a video inside ph 460. i can t find the right place for a green negative whire from back side. The green whire are one end connect to negative pin from power circuit.

@RUSKAJACK 2 года назад

Hey Teddy. I looked your video and have to say, thumbs up to your work..nicely done and definitely nerves of steel you have. I Have the same issue at the moment on my Sharp GF-555x Boombox. Cannot figure out what is the problem..why the left speaker is mute (only very very light sound can be heard, but nothing else). I have cleaned the circuit boards and all the connectors, sadly these measures didn´t help. Do you have any suggestions, what should i do or try ???

@waukee321 2 месяца назад

Sometimes the pots and switches really get tarnished so badly that even contact cleaner won't work and I've resorted to metal polish or even Tarnex to remove the oxidation. You have to rinse off the Tarnex ASAP with contact cleaner afterwards though.

@dmcintosh1967 4 года назад

Very nice boom box. I have a GE form 1983 and it only has sound out of one speaker( unless you use headphones). The mpx circuit doesn't work( fm stereo) . I would fix it but you have to take dial scale off and the dial string.

@teddyhashee 4 года назад

Probably you want to check the internal switch of the head phone too. Sometimes this switch caused no sound issue too. I hope you will be able to fix the problem and enjoy your music with '80s GE boombox.

@tonys623 4 года назад

That Fisher sounds pretty good.

@teddyhashee 4 года назад

Thank you for your comment!

@truevibecheck6927 Год назад

Same thing happened to my JVC my dad found on the side of the street and he knew I collected cassettes so he gave it to me. I’m not that techy so I gave it a few good hits with my hand, it’s working now lol 😂

@lowchopr1 6 месяцев назад

How you get the blue lights??

@hadireg 4 года назад

great job!👍

@teddyhashee 4 года назад

Thank you!

@selimladziak3618 4 года назад

i take mine boombox from yard its 30 40 years old. it works but sounds only "zzzzzzzzzzzzz" what can i do for it? it gives same sound on every thing(casette, fm, am etc.)

@Stremyashisya 4 года назад

Мастер высочайшего класса. Респект.

@teddyhashee 4 года назад

Thank you for your compliment on my work!

@EdwardSteven352 4 года назад

Which component causes the failure in the tone control board ?

@teddyhashee 4 года назад

The tone control board I used was almost OK except bass slider pod. Other than that, every parts were still in good condition. But the other 2 of tone controllers, I will re-check them and will replace the damaged component to see how it work.

@juniorsmith7703 2 года назад

Hello Teddy, are you still in business? I have a 480 K that I’ve had and played off & on reliably since the mid 80’s. Well, it finally started crapping out: first the left channel then the volume started oozing lower and lower. I’d really love to have it repaired!!

@of5458 3 года назад

What is the tool you are using to check transistors at 16:33?

@waukee321 2 месяца назад

It looks like a nice handy transistor tester/identified with a display that identifies the three legs (emitter, base, collector), voltage drops/ outputs, and whether it is a PNP or NPN type transistor.

@mister1der 4 года назад

*Pre diagnose 1.volumes and switches 2.Headphone 3.Speaker *Technical troubleshooting 1.Signal by stages from 2.Power amp 3.Preamp and Tone control 4.Change damage parts *Surgical troubleshooting 1.voltage supply to IC's,Xsistor's 2.Signal input capacitors 3.Change damage parts

@teddyhashee 4 года назад

Thank you for the great information. It will help me as well as help thousands of viewers who encounter the same problems.

@macrodriguez5697 4 года назад

Great work Teddy. I don't miss your videos.

@teddyhashee 4 года назад

Thank you for your compliment on my work!

@jasejj 4 года назад

You have the patience of a Saint working that out. Although, would injecting a signal directly into the amplifier and working back not have arrived at the solution more quickly?

@teddyhashee 4 года назад

Yes Jason. You are absolutely right. When I opened the PH-480, I was lost where to start since it was too much complicated center unit design. When I injected signal through volume controller, at that time I finally got some idea what should I do in the first hand. But it a good learning process for me.

@ZhuzikBer 4 года назад

It is necessary to have iron nerves and Titanic patience to restore such beauties! ))) 👍

@teddyhashee 4 года назад

Thank you for your compliment.

@johnvictor960 4 года назад

You are the best techichian i was see..... very good job master... do you have Facebook master?..i want to add

@teddyhashee 4 года назад

Thank you for your compliment on my work. I do facebook but not using it since I am not fun of facebook. But in the future I may use it.

@jussikuusela7345 4 года назад

Neat looking boom box but really complicated build and clearly a nightmare to diagnose or repair

@teddyhashee 4 года назад

It is really complicated build and the parts located deepest location are always damaged. LOL

@waukee321 2 месяца назад

It's a pain to get some of these schematics. Not much you can do without them if it is a difficult problem.

@praveenkumar-tv9wu 2 года назад

Hi I am ph 480 I am looking for IC LA4126 pls help me to find

@abc-ni9uw 4 года назад

Hello teddy how many years have you worked on this stuff? You are very clever knowledgeable indeed

@teddyhashee 4 года назад

Not so long. I was a collector of the vintage items, and whenever I found something I was trying to fix it for online sale. At some point I started concentrate on these vintage music gears, such as turntable, flip-clock, boomboxes, etc...

@abc-ni9uw 4 года назад

@@teddyhashee can you tell me do you repair old crt Sony trinitron

@abc-ni9uw 4 года назад

Also how old are you

@teddyhashee 4 года назад

I do not work with TV set.

@waukee321 2 месяца назад

I don't blame you. Some dangerous voltages in them too

@flufycat2748 Год назад

Hi! If you change the surround suspansions of the speakers, you gain more low bass.

@rashidali3670 4 года назад

sir have a sony cfs 715s radio casstte corder the problem is no bass and fm radio is not find station all function are good full sound and equilizer is working. but default bass is not working and radio is only hiss. what is this problem i have changed ic but same problem. what a cause please suggest me i really grateful to yoi

@teddyhashee 4 года назад

Probably tone controller since the bass and treble is in that section in most of the model. Probably the amp is OK.

@rashidali3670 4 года назад

@@teddyhashee but bass table is works but internal bass not works

@teddyhashee 4 года назад

There are countless reason your boombox does not work properly, and doing troubleshooting work to pinpoint the cause is most difficult and time consuming work. You need to test it step by step to find it out.

@rashidali3670 4 года назад

@@teddyhashee ok

@rashidali3670 4 года назад

@@teddyhashee how can test creamic capasitor in board

@hamodachichigo8029 4 года назад

Now that's what I'm Talking About

@teddyhashee 4 года назад

Thank you for your compliment!

@baderheg5360 4 года назад

the hi fi cassette is made in japan.. the tecnicien is from japan it is great this is the great japanes technologie .

@teddyhashee 4 года назад

Thank you for your compliment and comment.

@waukee321 2 месяца назад

The older Japanese electronics were built very well. Panasonic units really last.

@phumphankm920 4 года назад

good

@teddyhashee 4 года назад

Thank you for the compliment on my work.

@SDS-1 4 года назад

What's the name of music❤

@teddyhashee 4 года назад

If you are asking about music on Bluetooth, Feel The Funk - Jimmy Fontanez & Media Right Productions It is youtube license free music. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE--lxRFX80I-s.html

@of5458 3 года назад

4:44!