Urgent alert to MSX2/2+ owners: suicide capacitors on HIC-1 daughterboard

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Van Grauw

Ascended (8314)

afbeelding van Grauw

08-09-2017, 17:18

RetroTechie wrote:

Even among hardware hobbyists, few have such a tool. But what works equally well:

  • Take a sharp knife to the part, and cut through the solder itself (not the underlying pcb track!). Going 100% through isn't necessary as long as it's enough to pull the part from the board without taking pcb traces with it. This option has the advantage the pcb isn't heated at all, only when soldering in the replacement. Or
  • Use 2 soldering irons. Shocked! Most hobbyists have an old one lying around somewhere, or can borrow/buy a 2nd one for peanuts. A soldering iron on both sides of the part, and when solder on both sides has melted, you lift the part up like the Chinese grab rice with their eating sticks. LOL! Who cares where it drops or whether it sticks to the soldering iron - it's off the board, you discard it anyway, job done.

Thanks for the SMD desoldering tips.

I was thinking to add some fresh tin and then use solder braid / wick, wouldn’t that work as well?

Van Alexey

Guardian (2288)

afbeelding van Alexey

08-09-2017, 18:45

There's nothing better for desoldering of SMDs than this baby:

https://www.aliexpress.com/item/2015-Brand-NEW-Hot-858D-220V...

Van sd_snatcher

Prophet (3031)

afbeelding van sd_snatcher

08-09-2017, 23:06

Grauw wrote:

Thanks for the SMD desoldering tips.

I was thinking to add some fresh tin and then use solder braid / wick, wouldn’t that work as well?

If you have in mind the resistors and capacitors for the audio fix, then it's enough to heat one side of the part with the soldering iron, and after some time alternate to the opposite side. After you do this some 3 or 4 times the part will come loose and stick to the tip of the soldering iron, or at least slide out of the pads.

Van sd_snatcher

Prophet (3031)

afbeelding van sd_snatcher

09-09-2017, 13:44

I found a good video that shows how to easily desolder SMD resistors and ceramic capacitors.

And here how to remove the SMD electrolytic capacitors.

I hope it helps. :)

Van Grauw

Ascended (8314)

afbeelding van Grauw

09-09-2017, 15:03

Thanks!

I need to get off my ass and order those components already Big smile. Stupid free shipping threshold makes me want to look up more components to order.

Van sd_snatcher

Prophet (3031)

afbeelding van sd_snatcher

09-09-2017, 18:01

Another tip: when soldering the components back be sure to throughout fully clean the pads and the PCB around with isopropyl alcohol and a cotton swab, then apply a good solder flux on the pads. Here's a SMD resistor soldering.

Van joseph0126

Supporter (12)

afbeelding van joseph0126

01-08-2019, 10:37

Hi Folks, today I replaced 3 capacitors on HIC-1 daughter board with Tantalum capacitors, C10=10uf/16v, C14=10uf/16v, C22=100uf/16v, my console is Sony HB-F1XD, the startup screen display abnormal like below, there are several noise on the left area, and the noise will almost disappear after 10 mins. Did I use the wrong specification of capacitor ? Please advise and Thanks a lot. Smile

image

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