Rebuilding My First Amplifier | Yamaha G50-112 | DIY Guitar Amps

Подписаться 3,9 тыс.

Просмотров 5 тыс.

50% 1

Welcome back folks!
This week I am taking you through the rebuild of the first guitar amplifier I ever owned. It's a Yamaha G50-112. I received it when I was about 11 years old, and it was in rough shape even then. I didn't know much about it when I got it, but have come to learn this was a go-to for some gigging musicians. Many folks have called it the "Solid State Fender Reverb". I guess that's why the original musician converted it from a 112 to a 210 with 2x Fender JBL D110F speakers.
This video will take you through all the steps from the cabinet rebuild and tolex, to the fixes and upgrades I made to the electronics. A few new pots, a new jewel lamp, some new switches and jacks, as well as converting it to accept plug-and-play reverb tanks. I threw in a new Accutronics, 3-spring, long delay tank as well!
Enjoy!
#pougnetpedals #diyamps

Видеоклипы

Опубликовано:

1 май 2019

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист

Посмотреть позже

Комментарии : 31

@rayericphillips3916 17 дней назад

Well done you've made a great job!!!!

@MWHOME 5 лет назад

Wow! Fantastic restoration and mod to a great amp. I recently worked on my friend's G50-112 which was in very good shape to being with. I cleaned all the pots and upgraded the reverb (which had broken spring in that tiny chassis mounted tank) into a long tank. Reverb now sounds amazing. Almost like my 1977 Princeton Reverb! I loved his amp so much, I recently bought a rare brown Tolex'd 1982 Yamaha JX35 30 watt amp for $50. Same tiny little tank underneath chassis, so at some point I might put that short tank like you installed in mine.

@pougnetpedals 5 лет назад

Thanks! I'm very happy with the outcome. It actually gave me the bug for a mojotone build. Just trying to decide which one now!

@BD-me4nk 4 года назад

Amazing. Now I want to redo my g100 head after watching that!

@pougnetpedals 3 года назад

nice. its not that hard. give it a go!

@stalefisheffects 3 года назад

The G50 112 was my first amp too! I got it for $50 from the Starving Musician in Santa Clara, Ca. I sold it because it wasn't metal enough. In hingsight, the reverb was great and it had lots of clean headroom, wish I still had it.

@pougnetpedals 3 года назад

Agreed. This one came from a local musician who was actually my dad's barber. I received in the mid 90s and it was already modded with the jbl speakers, and had the blown reverb unit. I didn't know what either of those were at the time. This project put some life into the old guy!

@fiddlix Год назад

Impressive job there. Kudos.

@heduardosuchilt5092 Год назад

Omg this is an old video but I hope you see this! I need to find the molex connector used to plug into the speaker! The 112 i bought today came without it 😢 thank you!

@Musicalmane 3 года назад

Nice restoration I've been working on restoring a yamaha g100b-212

@pougnetpedals 3 года назад

Nice. Good luck!

@Madeguydo 3 года назад

Oh god I have a g100 2x10 mk3, which is a bit different, but does yours weigh as much? Mine is a backbreaker, it came without wheels as well. I wanted to remake the case for it in hope of reducing the weight, just wanted to know if it’s supposed to be like that in others as well

@Musicalmane 3 года назад

@@Madeguydo oh yeah it is quite heavy.

@Madeguydo 3 года назад

@@Musicalmane Ouch, maybe I’ll just settle for adding handles on the sides and ask my bandmate for help to not get herniated discs lol, thanks

@abeljurado9161 8 месяцев назад

Friend, how are you? impressive work, I would like information about the front sticker, can you help me with a mold of it, I have the same amplifier and I am going to carry out the same restoration, can you help me with that please, greetings from Guayaquil, Ecuador

@MrMoonboss666 19 дней назад

I know this is a long shot but... I'm having the same problem with the distortion on my amp (same model). Do you remember which 2 diodes you replaced to get the distortion back? Any help would be appreciated.

@1960tiffany 5 месяцев назад

Great video. Any chance of getting a copy of the schematics for this amp? I've got same one but no sound coming out.

@duncanperry9487 Год назад

Hello - I have one of these and it's currently broken. I was wondering if you have any pictures of the preamp board underside? I have found a schematic online and mine seems a bit different to the schematic! Any help at all would be gratefully received :)

@GAPC-nb7qs Год назад

Those amps in that yamaha series were designed by Paul Rivera from fender, amp used a parametric eq. Yamaha put a lot into research and development of these units.

@bb_lz9790 Год назад

This amp is from the previous series (to the Series II amps that Paul Rivera worked on).

@GAPC-nb7qs Год назад

@@bb_lz9790 yes that's correct, a series 2 Rivera sold a couple months ago here in Canberra on marketplace for $200, amazing original condition. Sorry I never snapped it up. I have a series 1 also

@GAPC-nb7qs Год назад

Amps of this age can benefit also from a full recap, electros for starters a nd resistor check in the power supply and output circuit. Nice job and well done

@enthnd03 3 года назад

hey, i had this amp, my friend has it now and he's been thinking about fixing it for himself, do you think you could toss me the link for the schematics?

@pougnetpedals 3 года назад

Try these two: elektrotanya.com/yamaha_g50-112_pcb_adjustments.pdf/download.html elektrotanya.com/yamaha_g50-112_guitar_amplifier_sch.pdf/download.html Tough to read, but should get you through!

@mattgraham5240 2 года назад

Do you know what kind of potentiometers it uses? The current switches crackle.

@pougnetpedals 2 года назад

I think most are b50k. You should be able to find the schematic online.

@GAPC-nb7qs Год назад

Clean those pots with electronic switch cleaner, half the work with older amps like this is a good service ie switch contact and pot cleaning. Then a good recap, power supply at least, use quality electrolytic capacitors.

@GAPC-nb7qs Год назад

A good overall clean, remove all old dust and fluff with compressed air, I have even washed old boards. Make sure the boards are thoroughly dry, resolder nearly all joints especially wire connections.