REPAIR OF YAMAHA PSR E443 THAT HANGED/STOPPED BOOTING AT DISPLAYING "YAMAHA"

[@rviu6390]

good job bro. 👍👍👍

[@thoppzy23]

Thanks

[@user-oo8el3ri8u]

i have another customer PSR E-443 he use adapter negative polarity. Then the problem is motherboard cannot open, But power supply is ok.

[@thoppzy23]

Use adaptor with the right polarity. And let's see what comes out of it

[@user-oo8el3ri8u]

@@thoppzy23 they use adaptor right polarity when switching power on the LCD no display then apear bluescreen the mother board is not working but power suppy its ok

[@samuelocheme7328]

Pls sir if I press my power it will bring light and go off after I remove my hand

[@thoppzy23]

@@samuelocheme7328 call/WhatsApp [phone]

[@mr.d.khumalo5561]

I got a psr E433 it is missing some parts on the analogue board, 1. The switching transistor 2. The regulator on the heat sink together with audio amp IC Can you please help me with the part numbers for those 2?

[@thoppzy23]

Audio IC is BA5417 Switching transistor....... B1342 or B1344 or B1568 or B1566 Regulator on the heat sink is 7805

[@mr.d.khumalo5561]

@@thoppzy23 You are awesome!

[@mr.d.khumalo5561]

@@thoppzy23 Thank you I replaced with TIP117, and tested all components around, When I connect power supply and bridge CN203, I get power (about 12V) but it powers down as soon as I unbridge. Is this correct?

[@thoppzy23]

@mr.d.khumalo5561 Why not get the right components and fix them at once. I hope you know that bridging has its own effect?

[@mr.d.khumalo5561]

@@thoppzy23 I understand sir... That is the best component I could find. Please help me understand. Is power switching completely controlled by the analogue board.. PSR e433

[@peterwairaro2023]

My Yamaha psr e463 is not turn on, i mean if you hold the power button you may see light but if left it goes off

[@thoppzy23]

the fault is directly from the digital motherboard

[@hustlemotivation24]

Hi, I have a new Yamaha E453 that only blink light but does not power on. Can you help?

[@thoppzy23]

Yes, Where's your location?

[@hustlemotivation24]

@@thoppzy23 Yola, Adamawa State

[@thoppzy23]

@@hustlemotivation24 we base in Lagos, the fault is directly from the digital motherboard (that green panel). Are you a technician?

[@hustlemotivation24]

@@thoppzy23 I am not a technician sir. How much will it cost to fix it let me ask if I can send it to your location.

[@thoppzy23]

​@hustlemotivation24 we will have to test to know how many components sre faulty, the number of faulty components will determine the total cost of repair but it can't cost you less than 70k. You can call/WhatsApp [phone]

[@smartmediatv4015]

Hi sir, I have a Yamaha keyboard PSR E423. The volume reduces everytime I didn't use it for a while. As of now the maximum volume can not be heard at 2-3 feet away. But it worked well with the 1/4inch cable to speaker connections. Without external speakers I can play it comfortable because I struggled to hear what I was playing. Please I need your professional advice on this issues. Thank till I hear from you.

[@thoppzy23]

I'll suggest you check the capacitance and ESR of the capacitors around the DAC around the digital motherboard. Most especially the ones connected to L & R output pins of that IC.

[@smartmediatv4015]

​@@thoppzy23ok. But you speak in technical terms. What do you mean by capacitance and ESR and DAC?

[@smartmediatv4015]

​@@thoppzy23it will be of good help to me if you explain further. Thank you in advance

[@thoppzy23]

@@smartmediatv4015 call/WhatsApp [phone]

[@smartmediatv4015]

​@@thoppzy23ok

[@user-oo8el3ri8u]

good day im philiphines can you help me the display of the number is half only what is the problem sir

[@thoppzy23]

What's the model of the keyboard?

[@user-oo8el3ri8u]

@@thoppzy23 yamaha PSR 443

[@thoppzy23]

@@user-oo8el3ri8u send a short video to view it.

[@user-oo8el3ri8u]

​@@thoppzy23is done solve problem sir loss contact of LCD

[@kevgaming2776]

I have a Yamaha per-343 not booting… just light and nothing more

[@thoppzy23]

@@kevgaming2776 are you a technician?

[@user-oo8el3ri8u]

what parts of the motherboard can swithching the program sir

[@thoppzy23]

Can you reframe your question. Better still explain what exactly is wrong with the keyboard

[@nishantharohana6048]

Hello dear I'm from Srilanka, my Ymaha E443 turns on while I connect the power adapter without the power button pressed. Sometimes it takes several minutes to function the keys also. Can you kindly give me an advice ❤❤❤

[@thoppzy23]

The main reason why it's like that is that, the transistor B1342 or B1568 is faulty, try as much as possible to replace it with new one. The keyboard will respond to switch. Concerning taking more time to function, just restore it to factory settings by holding the last white key by your right hand (key C6) then switch on the keyboard or connect the adapter.

[@buildyourspirit990]

Please where did you buy the brand new component???

[@thoppzy23]

We are selling in pieces and bulk if you need any

[@kurtjustinesaraos9545]

same problem with my keyboard Yamaha psr e443. Sometimes it boots but most of the time it hanged on YAMAHA display. I'm from the Philippines. And I think I'm miles away from your repair shop. Maybe you can help me troubleshoot with the digital motherboard? or do you have some manual that I can read on to know how to repair mine if you mind? Thank you in advance for you help sir.

[@thoppzy23]

Send a message to my WhatsApp [phone]. So, I can guide you on how to fix it yourself

[@byekwasohussein2780]

I have yamaha psr E443 from nowhere some Key's a not working

[@thoppzy23]

Where's your location? Or send a short video of it to my WhatsApp [phone] to see if I can guide you to fix it yourself

[@user-tf1ff2br4h]

Hello dear,my keyboard yamaha psr e433 is not functioning,it only display blue with no information over and also no sound...pls show me something.

[@thoppzy23]

The fault is directly from the digital motherboard. You can call/WhatsApp [phone]

[@thoppzy23]

The fault is directly from the digital motherboard.

[@michealigwe5166]

Hlo how can i fix prsE 303 with no sound and display on screen

[@thoppzy23]

Yes, call/WhatsApp [phone] for better discussion

[@michealigwe5166]

Okay

[@peterwairaro2023]

Where is your location?

[@thoppzy23]

3, Victoria close Diamond Estate Bus stop, along Isheri Igando road, Lagos. You can call/whatsapp [phone]

[@DecentMiebi]

This is the actuall problem

[@thoppzy23]

Where's your location?

[@djfrayodjfrayo6351]

How can i get the ic i want buy please

[@thoppzy23]

we have them available, let us know which one you need

[@eswardsukupenzi5102]

Hello my keyboard is not switching off

[@thoppzy23]

What's the model of the keyboard? Where's your location? You can call/WhatsApp [phone]

[@opjstv5325]

Pls I have the same keyboard that has mother board problem exactly like this...pls drop ur number for better communication

[@thoppzy23]

07034481622

[@FamuyiwaOlawale]

Hi I have a keyboard to repair PSR E423

[@thoppzy23]

WhT exactly is the fault with it?

[@elijaholadayo]

yamaha psr e453 hangs on startup

[@thoppzy23]

It can be fixed, Where's your location?

[@thoppzy23]

Call/WhatsApp [phone]

[@guthriethornley8245]

Promo>SM 😂

[@psamuelbmc7272]

How do I contact you via WhatsApp?

[@thoppzy23]

07034481622

[@josephbnoel.3718]

Sure