Comments on: Found Shorted Mosfet TSF5N60M In 3 Amp 12 Volt Power Adapter

By: Ulises Aguilar

Ulises Aguilar — Sun, 08 Apr 2018 01:24:48 +0000

MrAlbert van Bemmelen another grate tutorial and fix Sir

Likes(1)Dislikes(0)

By: Albert van Bemmelen

Albert van Bemmelen — Sat, 21 Oct 2017 19:52:29 +0000

Sorry Alexan, i couldn't find any datasheet with that name. However sometimes it helps to look for that number with other prefix like T6631 or MAX6331. Maybe it gives you the required information, see: http://www.tmtech.com.tw/DB/upload/LIST_FILE201010195658.pdf or
http://www.iatiat.com/pdf/AT6331-Rev1.0.pdf or
http://pdf.datasheetcatalog.com/datasheets2/39/398171_1.pdf or
www.cnledw.com/inter/download.asp?file=2012020210533865550.ppt
Good luck with your repair!

Likes(0)Dislikes(0)

By: Robert Calk

Robert Calk — Sat, 21 Oct 2017 01:59:16 +0000

In reply to Albert van Bemmelen.

After checking, the app Electronic Toolbox is $5.99. But there is a free app called RS-Toolbox that has some good stuff and a resistor calculator that goes to 6 bands. But the Electronic Toolbox is much better.

Likes(1)Dislikes(0)

By: Yogesh Panchal

Yogesh Panchal — Fri, 20 Oct 2017 15:58:48 +0000

Albert,

Nice article ! thanks for sharing.

Likes(1)Dislikes(0)

By: Albert van Bemmelen

Albert van Bemmelen — Fri, 20 Oct 2017 12:37:31 +0000

Last interesting update, about my Dreambox Sunray SR4 rev.D11 repair: It now WORKS like a completely new Satellite receiver again!
After I hotfixed the CPU controller chip (removed the cooler on top first!) and I had replaced the mentioned 48 pins Nand chip, the Sunray is flashed successfully and even the Fan works again!!
Removing the old Nand was the hardest part because 2 copper tracks broke off from the top layer board in the process. But luckily I managed to reconnect those onto the new Nand flash memory chip with 0.2mm wire and my smd solder station.
Keep in mind that there are other revision Sunrays like rev.D4 that doesn't have a SIM 2.10 ROM but a Ferrari chip, which means that also if your Dreambox is successfully flashed it only works with the right SIM/Ferrari ROM chip card. If I for instance boot my rev.D11 Sunray with a Ferrari chip it creates a NO CA Failure and looks like a bricked machine! My rev.D11 as was explained only works with the DM800HDse SIM2.10 chip card! So you know what to do and what to expect if your Dreambox also has image flashing errors and a Fan that doesn't rotate anymore. The only thing that rests me to do is gluing back the Cooler onto the Dreambox Cpu with special Thermal Conductive heatsink plaster. See this link: https://nl.aliexpress.com/item/Thermal-Conductive-Heatsink-Plaster-Viscous-Adhesive-Compound-Glue-For-PC-GPU-IC-smt88/32739108365.html

Likes(1)Dislikes(0)

By: Robert Calk

Robert Calk — Fri, 20 Oct 2017 12:18:15 +0000

In reply to Albert van Bemmelen.

I'm glad you found some good tables, Albert. I still highly recommend the app "Electronic Toolbox" to everybody that has Windows 8 - 10. I'm not sure if it will work with Win7. It has all kinds of great info, calculators, scientific info, and info on connectors and everything you can think of. I think it was only about $5 USD but I don't remember for sure, but get it. It will be the best $5 you ever spent!
Yeah, I agree with you and Mr. Yong that since the resistor is within the tolerance that is required by the circuit that it should be fine. But I do not trust anything that isn't what it is supposed to be. So I will continue to throw them away.

Likes(1)Dislikes(0)

By: Justice

Justice — Fri, 20 Oct 2017 10:55:10 +0000

Interesting and exciting to read through, keep up good work Albert.

Likes(1)Dislikes(0)

By: Albert van Bemmelen

Albert van Bemmelen — Thu, 19 Oct 2017 12:21:08 +0000

In reply to Albert van Bemmelen.

On this very good link I found a couple of useful matching 5 color Band code tables Robert (I started looking on Velleman Color band code):
https://www.sampletemplates.com/business-templates/resistor-color-code-chart.html
Apparently Black-Blue-Grey-Silver-Brown indeed exists written as 068 x 0.01 at 1%. So you were right about the 1% Robert. Most 5-Band Color Tables like in ElectroDroid apparently were incomplete or just wrong. But I do not think there is any reason to throw away a good replacement resistor if it deviates a little from the on the resistor itself given tolerance. (They are probably just manufactured with a little more off-set value than intented. Which they probably do by cutting into a rotating resistor while calibrating with a laser.) And I doubt that the resistor value will change in its lifetime from that measured value. In this case from the 0.66 ohm I measured, even if its value is a little out of spec of the color marked tolerance.

Likes(0)Dislikes(0)

By: Albert van Bemmelen

Albert van Bemmelen — Thu, 19 Oct 2017 11:10:57 +0000

In reply to Robert Calk.

I understand Robert but I really dont think they are 1%. In my 5 Band color code table, brown just doesn't exist. In Electrodroid it does not and others seen on the internet neither. But I will have a look on the color code sources you mentioned if I can find those. Thanks.

Likes(0)Dislikes(0)

By: Alexan Catalin

Alexan Catalin — Thu, 19 Oct 2017 10:42:37 +0000

Hi, dear electronic experts of Jestine's site,

I have found in a power supply the integrated circuit "CR6331". "G" capsule, SO7. I don't have found datasheet, can anyone know ?

Likes(0)Dislikes(0)