I Bought 2x "UNTESTED" Grandstand Astro Wars.. Can I fix them?

[@telemedic5142]

I have just repaired an “invader from space” with the same fault. I can only assume we visited the same forum. Like you, I too could not find a 140v zener, but I had not thought of doing what you did. So after watching this video, I did exactly that. So thanks to you!

[@BuyitFixit]

No problem, glad you got it fixed 👍

[@fredwooding599]

I never would have thought to stick 3 diodes together. Another lesson learned, Thank you.

[@BuyitFixit]

Cheers Fred 👍

[@rory9174]

Thank you so much. I cant believe that a 140v diode is required for a 6 volt, battery operated gadget. I thought i misheard you until you started lining up diodes to make up the 140 volts. Amazing. Shows you how much i know.

[@BuyitFixit]

I know these VFD devices run the display at quite high voltages, the 140v diode thing came from another channel.

[@NicksStuff]

27:15 It *might* have been easier (and less risky for the screen) to put them on the trace side given how much space there seems to be inside the case

[@Dutch_off_grid_homesteading]

Heya, nice repaired 2 out of 2 well done

[@BuyitFixit]

Thank you 👍

[@jason_a_smith_gb]

I remembered having an upright space invaders but couldn’t remember. Woke up today with Grandstand in my head. Nice fix… :)

[@BuyitFixit]

Thanks Jason. I've fixed quite a few of these types of games, and more recently I bought a broken 1up Street Fighter cabinet, which was faulty. After fixing the original faulty I convert it to play over 7,000 games if you didn't see that one.

[@jeffreymullen3091]

Keep the videos coming. Loving the milwaukee series!

[@BuyitFixit]

Thanks Jeffrey. I've got about another 6 milwaukee repairs in the pipeline!

[@MegaTerryWogan]

Took mine apart as an 8 year old...no clue. Great to see this 👍

[@BuyitFixit]

Thanks DAD TDM!

[@stevvieb]

you and me both

[@tomharris1457]

I was banking on capacitors, o well, u won!

[@BuyitFixit]

Cheers Tom 👍

[@wherami]

Loved it

[@BuyitFixit]

Thanks!

[@GManmcaoidh]

Nice!

[@BuyitFixit]

Thank you!

[@wolfcanine100]

ive gotten lucky with untested stuff on ebay. it depends a lot on the seller being honest i guess. some can try to get over on you by saying its untested but not always.

[@BuyitFixit]

I think it's more the exception than the rule, but yes totally depends on the seller 👍

[@neiltheplayer]

There I was screaming at the screen....NOOOOO the bands have to face the same way. Silly Me.

[@BuyitFixit]

😂😂😂😂

[@VISIONMOONLIGHT]

Hello, the game was running on batteries, but I wanted to check if it works on the power supply and I gave it 7 or 9 volts, I don't remember exactly, and something burned, I watched most of the repair videos on YT. I replaced several elements, such as NEC transistor 2SD882, 2SC945 C945, but it still doesn't work, and I don't know what to do anymore - I don't know how to check if the integrated circuit hasn't burned, hmmm. When I turn it on from the battery, the 2SD822 transistor burns out. Or it was completely damaged, but I have a glimmer of hope that it wasn't ;/ ehhhh, I'm an electronics engineer :)

[@BuyitFixit]

It's been a while since I worked on one of these, there is a thread here which shows voltages etc which you might be able to compare against. www.handheldmuseum.com/forum/viewtopic.php?t=2316

[@VISIONMOONLIGHT]

Thank you very much - I don't know if I can handle it, but I'll try! = have a good day!@@BuyitFixit

[@달리자-m8e]

I have same problem on my tablet can u tell me what transistor should i buy?

[@BuyitFixit]

I'm fairly sure it was a 2SD882 transistor. It should have a marking of D882 on it. Hope that helps 👍

[@francescvilches3967]

For the ones looking for a 140V Zener diode: 1N5382B

[@BuyitFixit]

Thanks for sharing 👍

[@luckywetland]

According to eBay dictionary: untested (adjective) (1) already tested (a) broken (b) dead (2) someone been there before you (a) unsuccessful prior repair attempt (b) missing screws

[@BuyitFixit]

😂😂😂😂👍