Reply 40 of 47, by The Serpent Rider
- Rank
- l33t++
I assume the PCB also had all the necessary caps preinstalled?
I must be some kind of standard: the anonymous gangbanger of the 21st century.
I assume the PCB also had all the necessary caps preinstalled?
I must be some kind of standard: the anonymous gangbanger of the 21st century.
yes, all components were in place.
a good news is that gddr3 has termination on die, there is no "hundreds of resistors" around the chip, like in case of ddr1
got this BFG7800GS from scrap.
with a little problem: does not start.
checking HSI bridge chip and some pci-e lines were lost + cracked smd capacitor in pci-e line.
HSI chip reflow and connection to pci-e has been restored.
[attachment=-1]7800-2.jpeg[/attachment]
Glad to see that card back in action. They're in the top of the line region for AGP. And it's always fascinating to see how different the approach of rialto vs. HSI design was back in the day.
Gainward Ti4600 - No signal when booting into Windows [FIXED] - A repair of a Geforce 4 Ti4600 - screen going blank under 3d and later on even under windows, underclocking did not yield an results. No visible damage. Recapping (especially) C1263, C1267 and C1271 solved the issue. Card is fully functional. Caps where looking okay, but one had severely degraded capacitance. Done by zuldan
got this blue FX5900 Turbo (and not so turbo) for repair.
missing VMEM, ripped memory pads...
but it is alive and working!
Nice work on those pads! Had a card once where one or two pads just went missing, fortunately they were NCs.
A successful repair of a Radeon 9700 Pro: ATI 9700 Pro Broken [FIXED]
Starting the card in a system directly prompted full screen artefacting, though it appears like a repeating pattern, indicating memory issues. After running R3MEMID in a automated fashion (so that the display issues don't matter) revealed errors on all four memory channels (MDA, MDB, MDC and MDD). This lead to the measurement of all power rails on the card, revealing that MVDDQ (used for memory I/O by both the memory ICs and the GPU) is not up to the desired voltage (1.13V instead of 2.8V). The rail resistance measured normal (card disconnected from the system), leading to the conclusion that the power delivery of the rail appears faulty. An attempt was made to investigate the ISL6522 is in overcurrent protection. During the process the dual FET of the rail got disconnected from the board. Replacing it fixed the power rail and fixed the whole card.
Repair done by zuldan