Yaesu VX-8R Service manual

Here is the manual containing info about the VX-8R and VX-8DR
http://www.4shared.com/office/ioDViEGr/VX-8DR_SM.html?
Enjoy

VX-8 modded pictures

Steven from the states sent me a picture of his modded VX-8. He had done it with the instructions provided in this blog.

It looks amazing and the green up/down buttons idea looks nice. Here it is:

Thank you Steven! Glad i could help.

Nagoya NA-771 Tests

I tested today one nagoya NA-771 antenna i have.
A search on the net revealed that the antenna has poor performance on UHF
I used my Anritsu site master antenna analyzer to test the antenna for VSWR at some bands.
Here is a sweep from 100MHz up to 500MHz:

Here is a VHF sweep:

And a UHF one:

Clearly the antenna has very high SWR on the UHF band.

VX-8GR Service manual / Technical supplement

Here is the link to the VX-8GR service manual for download, finally i found something.
I just hope i'll find the VX-8 one.
https://rapidshare.com/files/839372347/VX-8GR_SM.pdf

Please donate 1.000.000 euros cause i'm out. lol

Lenovo X300 freeze problem

I have seen many users complaining about their lenovo X300 laptop.

My friend has one and had the same problem, it wasn't even able to boot windows and froze up.

We decided to open it and check it out. Seems that the problem is on the hardware side rather on software.

The Intel SLAHZ LE82GS965 (it's a VGA-memory controller chip) needs a reflow or a reball. On the picture above you see a snapshot right before the reflow.After that the laptop works like a swiss clock without problems.

Below you can see another board from a Sony VGN-NR series laptop with vga problems, this was also solved by reflowing the Nvidia chip.

SOIC soldering quick video

A testing video i made.

HTC Leo - HD2 Touch screen change

An old customer-friend who lives in the same area as me brought me his HD2 with a broken Digitizer. On the newer models of HTC it doesn't worth to change simply the digitizer. He bought a digitizer only from ebay. I'll give you some info on WHY HTC asks you a lot of money for a simple LCD or touch screen change.

Since the diamond era many of HTC's phones have the same construction like this. New phones are slimmer, way to slim, so they had to find a solution to fuse everything together. The LCD is factory glued to the digitizer and sometimes part of the chassis. The HD2 has allmost half of the phone fused together.
When i say fused i mean that parts are hold together by a thin double sided sticky foam, the glue holds very tight in place. If you take the individual components apart, you are not actually remove the glue, you just destroy the foam so it's impossible to glue the parts together again. The LCD is so slim now that breaks with a blink of an eye.
On the other side you have also contamination, unless you have a clean room, it's allmost impossible to glue the lcd and touchscreen together without having small dust particles or pieces of glue between them, even if you succeed (like i did half an hour a go) the end result will be messy.
I have good experience on repairing phones and PDA's (i was the owner of an official HTC service center some time a go) and even so it took me 2-3 hours to seperate the lcd, broken digitizer and chassis and glue them together again.
That time means money on big companies, they want to minimize that and also the rate of success, they simply change half of the phone and they are set. This also enables them to give you full warranty if the part is faulty etc.

LCD's and digitizers are glued together even on very old models (like P3300 etc) but at that time only the lcd assembly was changing.
On newer models you have a capacitive touch screen plus the whole face of the phone, plus buttons etc etc so the cost is higher.
Below there is a pic of the touch screen i removed:

If you want to replace a broken LCD or touch screen simply buy THE WHOLE LCD ASSEMBLY, it will save you time and possible frustration on the result. Most of the new models need the whole assembly.