First post, by pentiumspeed
I'm getting tired of this. Recently received 6 chips of 512K x 16bit FPM chips for upgrading my video card to 2MB. Corroded SOJ leads wouldn't take solder at all, So I threw 4 into ultrasonic to try to brighten up the leads to take solder properly. After 2 baths, still not and paint on top started to flake off. That ended my attempts at using these and trashed them.
Few years ago, bought few high frequency ampifiers in 5 lead T220 package. Lead breaks and splintered like wood breaking in two, when I bend them slightly, amp didn't work at all, highly distorted even I had resistor in series to limit current into transformer.
All of the OEM branded (Micron, Hyrix etc memory modules especially from china their SPD were reprogrammed using one same serial number even it ID correctly and has correct timings, even the ECC, registered DIMMs were like that way too. Label was well done quality and chips generally is correct. But they were not not made and was not sold to OEMs like Dell, HP etc. Once again I bought from other sellers that were not sold by chinese people, were geniune memory modules with unique serial numbers in the SPD.
One time I bought a Latitude 3350 with i5 motherboard this is hard to find and tend to be expensive, turned out it was tester beta motherboard that Dell don't release to public, was a testing computer broken down and parts resold and the bios cannot be flashed to normal bios. The website looked American but I had to drill deeper and turned out it was a Chinese website selling junk. Since this was expensive, had to return to get my money back. I had to nag few time then finally got my money back.
On top of this of all, The goodies like IDE to SATA bridge chips cloned and put on low quality boards and sold on everywhere and not any choices even from chinese sellers and others that barely works. Not even hint of quality ones like Marvell chips on nice designed boards etc... (Startech is expensive but worth it).
I had enough!
Even I cannot find many choices of programmable PWM boards to run the PWM fans, not PWM the DC to vary the DC voltage which what is DC to DC is for, I needed true PWM controllers, only one you can get is Noctua which is 50 dollars dongle. Had to get the PWM adjusteable 2 fans connectors boards from chinese, they work well but no option to enable inverted output and no option for amplified PWM for high current PWM that some fans also requires. I didn't want to use temperature sensors and beeper on that, but worked for my special project but not perfect.
Also my job requires me to repair game consoles, phones etc. Specific chips like south bridges and older PS4 HDMI IC for PS4 is fakes or low quality chips and I hear this all the time on private facebook forums I joined. I even had to discard few audio ICs for iphone 7 as one source was high rate defects. Sigh!
Please give us choices! And right to repair is a must if we need to access to genuine parts so volley your demands at politicians.
I might have to make PWM controllers using 555 timers with jumpers to enable amplified or inverted or both, but I'm not a programmer but I'm really good with analog and digital chips designed from plans.
Cheers,
Great Northern aka Canada.
