Sourcing older Spare Parts?

[CHRIS-F]

Hi Guys,

How do you guys go about sourcing spare parts for older boards, I'm looking into a sound fault on my Super Pang board, I'm only a novice, so don't know too much about checking each part exstensively, but I thought a good start would be to replace the following,

LM324A Quad Op Amp.
Yamaha YM 2413 synthesizer.
OKI M5205 Speech Synthesizer.

I usually do most of my shopping on Ebay, but these parts don't seem to be easily available, checking the feedback for the chinese sellers who have these items shows a lot of negative feedback concerning fake IC's etc and a lot of the Images just so happen to have the same part number/date code as the IC wiki page, I'm not saying every IC they sell is fake but who knows.

Thanks :-)

[Mike A]

mouser.com

[PL1]

How do you guys go about sourcing spare parts for older boards

1. Read lots of repair threads.

2. Build a list of arcade and pinball related parts vendors mentioned/linked in those threads.

Twisty Wrist Arcade has the LM324.

Mike's Arcade has the LM324N.

Check datasheets to see what the different P/N variations mean. (LM234N is a low-power version IIRC)


Scott

[jennifer]

Your not wrong about couterfit parts, and should buy them from a trusted source even if they cost a little more...But, do you really need those parts? If we were to ask Jennifer I bet she would suggest buying a cheap (best you can afford) analog scope and learn the basics of problem solving, and checking parts...You will save money on the backend knowing what you have, and only buying what you need.

[CHRIS-F]

Check datasheets to see what the different P/N variations mean. (LM234N is a low-power version IIRC)
Scott

Thanks Scott, I did see a few parts advertised as 324N and 324AN, but wasn't too sure if they are interchangeable, can a low power version be used in it's place? I actually found some correct LM324A in the UK where I am but never realised they were Small outline Package, then I found some 16 pin sop to dip converter boards, but I've since found 14 pin version so I don't need to cut them down, I don't mind soldering them as I'm only beginning in electronics and need the practice :-)

[CHRIS-F]

Your not wrong about couterfit parts, and should buy them from a trusted source even if they cost a little more...But, do you really need those parts? If we were to ask Jennifer I bet she would suggest buying a cheap (best you can afford) analog scope and learn the basics of problem solving, and checking parts...You will save money on the backend knowing what you have, and only buying what you need.

Yeh! I would love to get a scope and a decent eprom programmer/IC tester, but I wouldn't know where to begin, my dad used to have a few TV repair shops and I used to watch his engineers using scopes/patern generators etc, it all looked magical to me, but I wasn't allowed to touch the equipment obviously as kids and high voltage in those TV's don't mix too well.

I think my knowledge in electronics is slowly getting better though a few years back I wouldn't have had a clue where to look, but at least now I know the sound problem sits around the eproms and amplifier/synthesizer section. I don't really mind swapping parts out at the moment as I can keep them for spares, but if anyone has any recommendations for a first cheapish scope available in the uk and a decent eprom programmer/ic tester, or even video tutorials on the basics, I'd be most grateful :-)

[jennifer]

Dave will get off on the right path ...