🔴 HP 6633A System DC Power Supply Repair - No.1130
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- Опубліковано 17 тра 2023
- HP6633A System DC Power Supply Repair
I repair a HP 6633A power supply, it is basically the same as the HP 6632A, and HP 6634A.
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Sure get all the easy repairs Switch and fuses 😂 Good job getting it going
BTW, got a new can of Deoxit D5 last night and it did not have that stupid always dripping nozzle they have had for years. Let's hope this was not a fluke and the stupid nozzles as a thing of the past.
Kudos.
Sprague iirc got et up by Vishay
Bit of a result right there I would say !...cheers.
Excellent video. Thanks. Do you use the JBC soldering station or a clone one?
It’s a clone, I did a couple of videos about it, the Jabe UD-1200
Don't think i'd have designed something that ran at 70°C at normal operation. What must the junction temperature be at?
Yeah 70 is to hot in my book, but it's HP so maybe they have 'Reasons'......squeak !
With the case (lid) off the airflow won't be optimal across those 70degC heatsinks & power resistors......so probably running a tad higher than it would normally possibly. As a result, good operation of that fan is CRUCIAL I guess.
@@IanScottJohnston i just thought that if the designer knew that the transistor would get that hot he would have put a heatsink on it. the case to air thermal resistance would be quite high so not sure the air flow from the fan blowing air out of the box would cool it that much.
in my mind if you can't keep a finger on it during normal operation then your over driving it. except for heaters that is 🙂
@@andymouse old age and overworked, that's my excuse for getting hot. ;-)
Nobody wants a smokin reefer.....