Is it possible to replace SY8009 voltage regulator IC with AMS1117 ⁉️✍️

electronium said:

greeting to the colleagues of the forum
As an electronic repair, they bring me set-top boxes, receivers, modems, TVs, etc. for repair. Interestingly, there is a common point between all these devices that the IC regulator of the 5v and 3.3v 2.5v 1.8v 1.2v power supply section burns. Does it burn? Is it possible to use the 1117 constant voltage regulator for the ease of work and the lack of time and energy spent to check the datasheet of the 6-pin or 5-pin IC?
View attachment 146161

View attachment 146156View attachment 146157View attachment 146158View attachment 146159View attachment 146160

Click to expand...

ChrisP58 said:

No.

The SY8009 is a switch mode voltage converter whereas the AMS1117 is a linear regulator. Not the same thing.

https://www.olimex.com/Products/Breadboarding/BB-PWR-8009/resources/SY8009.pdf

Click to expand...

aliarifat794 said:

The pinouts also look different to me.

Click to expand...

Papabravo said:

I'm not sure exactly what trick you are talking about. If you can't get the chips that were designed into the product, then you have little to no hope of repairing them. Just because someone brings you something to repair does not mean you are obligated to jump through impossible hoops. You need to accept that some things are beyond your control, and you need to learn how to communicate that as diplomatically as possible.

OTOH, you could propose a first-class roundtrip plane ticket to the country of your choice along with a couple of days at a 5-star hotel for you to obtain the required parts. The CFO might balk at the expense, but the user of the equipment might be over the moon.

Click to expand...