Looking for BROTHER MFC-J5340DW BIOS and memory.
What programmer do I need to read these Brother chip, RT809H?
smile
ICC ProfileGuru
Last Activity: 12-28-2024, 04:33 PM
Joined: 02-07-2013
Location: Klaipeda
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Brother MFC Inkjet Printer prints Unidirectional mode only?
Hello,
My friend brought his MFC-5895 for repair. Same problem "No ink in the ink tubes". Quick FIX when you have 3D printed parts.
But his printer has this problem of only printing in Unidirectional mode, else the text is blurry.
All service manual adjustment done and make no difference.
timing strip is OK
See nozzle check is also out of alignment.
[ATTACH=JSON]{"data-align":"none","data-size":"full","title":"brot... -
SCANGRIP POWERBANK 03.5782 - quiescent current draw 39mA
I got a scangrip I-View 03.5626 "Superior COB LED headlamp with sensor"
These supposedly are high quality.
The usual discounted price is 60Eur.
While the headlamp seems to work OK, it lasts 1.5HRS as per manufacturer spec. The headlamp charges to 1345mA to a integrated battery that suppose to be 1600mA. The manufacturer explained that this is software cut-off and true capacity is higher because battery does not discharge fully.
Well I did not disasemble the headlamp yet to verify. But the SCANGRIP POWERBANK 03.5782 - quiescent current draw... -
Re: ATX PSU SL-500 Short circuit can't find where? Transformer?
I think you did not read whole thread, all components tested OK that is why I removed the bulb. If I had a variac I would use lower AC voltage to see what heats up. But sometimes it is more easy to let parts explode then to find the problem.... -
Re: ATX PSU SL-500 Short circuit can't find where? Transformer?
The transistors on primary side heatsink were desoldered and tested OK.
The Viper22A is unknown condition.
Diode near viper is OK.
All other coponents on primary side are OK with testing using multimeter without desoldering. Any ideas?Leave a comment:
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Re: ATX PSU SL-500 Short circuit can't find where? Transformer?
I changed the Viper22A and diode from another PSU. The Transformer was also changed (to blue colored one the resistances are not as close to the posted above) as the first one had 1ohm on primary after magic smoke came out from other parts.
But after connecting trough the light bulb the thermal camera shows overheating capacitor. Connecting to mains direct makes the cap explode with loud bang
...
Leave a comment:
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Re: ATX PSU SL-500 Short circuit can't find where? Transformer?
Afterwards I decided to see what would blow if I connected direct to mains.
This is what blew, magic smoke came from Viper22A, diode next to it....Leave a comment:
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Re: ATX PSU SL-500 Short circuit can't find where? Transformer?
Well I found similar transformer in another PSU, and repalced it.
My meter measures only uH,mH value, and resistance.
The readings are in post above.
The PSU did not start, in fact the short circuit was still there.
I could not find. The VIPER22A was overheating 100deg C....Last edited by smile; 08-06-2022, 03:43 PM.Leave a comment:
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Re: ATX PSU SL-500 Short circuit can't find where? Transformer?
Primary:
2.66ohm
1.89mH
Aux:
0.48ohm
150mH
Secondary:
0.30ohm
108µHLeave a comment:
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Re: HP Z820 v2-ivy-bridge-upgrade
How to replace the data? HxD ?
ME: 0x005000 to 0x50FFFF
Boot block region: 0xFF0000 to 0xFFFFFF
How solve the "ME is in manufacturing mode" msg during booting. ???Leave a comment:
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Re: HP Z820 v2-ivy-bridge-upgrade
It seems I found SOP16 DIP8 test clip here
[url]https://www.aliexpress.com/item/32681208043.html?pdp_npi=2%40dis%21USD%21US%20%247.21%21US%20%246.13%21%21%21%21%21%402101d1b916590288369635927ecf97%2160349232142%21im[/url]
Meanwhile hope you guys can help me with information about the bios flashing.Re: HP Z820 v2-ivy-bridge-upgrade<br...142%21im[/url]Leave a comment:
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HP Z820 v2-ivy-bridge-upgrade
Hello,
Hello, got my Z820 workstation today. The serial number is
SP P/N 619562-001
CT PBLP0CM42L3K9
AS P/N 618266-001 2012
PCB Rev: 1.00
Bios is latest version J63 V03.96 12/28/2011
I have a EZP2019 High Speed USB SPI Programmer and have done few laptop bios upgrades / recoveries. Any help in upgrading the BIOS?
I read the guide at [url]https://github.com/SuperThunder/HP_Z420_Z620_Z820_BootBlock_Upgrade[/url]
1. So far it's unclear how to connect sop16 clip to the EZP2019. Is there adapter... -
Re: ATX PSU SL-500 Short circuit can't find where? Transformer?
Maybe because I don't know what it should show as good/bad ?
The resistance is very low so what is normal values?...Leave a comment:
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Re: ATX PSU SL-500 Short circuit can't find where? Transformer?
Well replaced the transformer for +5VSB that is for sure not 0.08ohm resistance, but the result is the same short circuit bulb shines bright. Still waiting for PWM IC.
"Do you have a "component tester" " - Have ESR meter, miliohm meter 2 wire, inductance meter, PEAK Atlas Atlas DCA Pro....Leave a comment:
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Re: ATX PSU SL-500 Short circuit can't find where? Transformer?
Thanks for suggestions, I ordered IC BH0270A, maybe it will fix it. Also looking for replacement transformer to salvage from another PSU, but so far can't find it.Leave a comment:
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ATX PSU SL-500 Short circuit can't find where? Transformer?
Hello,
I got ATX PSU SL-500 PSU. Images Attached.
It has blown VIPER22A, that I replaced.
Connected trough light bulb the bulb glows very bright indicating a short.
I tested every component on hot side of PCB and can't find the short circuit.
However the problem goes away removing +5VSB transformer.
The winding in questions of +5VSB transormer shows 0.08Ohms, is this normal?... -
Re: Identify component Fractal Design fd-psu-in2b-750w
Sure, but why datasheet specifies 1K? 1K burns in flames like on other PSU with same chip....Leave a comment:
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Re: Identify component Fractal Design fd-psu-in2b-750w
I tried 2Ohm resistor and PSU started, and all voltages are OK....Leave a comment:
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Identify component Fractal Design fd-psu-in2b-750w
Hello, I have a Fractal Design fd-psu-in2b-750w PSU.
There is burned resistor. Unknown value.
Can you identify it?
CHIP IS TNY280... -
Re: problem with Delta GPS750AB A PSU. No +5v VSB
Enamel coating dried but chirping is not gone.
I connected PSU to test board, about 250W load. It works runs benchmarks no problems.
However the chirping sound gets faster and faster with load.
Voltages are OK.
Very strange i double checked caps and my esr meters (2 of them) say all caps good including 2 big ones.
two big ones are 330uF and I measure 300uF, esr is within spec not more then 0.1Ohms
I connected anothe 220uF cap and it seems the cycle increased (without scope that is...Last edited by smile; 05-03-2022, 02:42 PM.Leave a comment:
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