What is the best computer repair shop near me?

Generally, at a professional level, monitors are "blah" or "BER" due to the cost of labor and parts, unless it's a high-end IPS display with a 97-99% sRGB or DCI-P3 gamut. Most monitors out there are not this one exception to the rule. Most of the time, if I have to take the display, even I often discard/pass them on due to the poor economics involved if they lack HDMI (DVI+VGA+HDMI is fine, but most are VGA+HDMI; QHD and up tend to use DP, HDMI, and USB-C on anything worth it's spec sheet unless it has QHD or better, and the other ports), especially older TN panels like these cheap Acer monitors. I will at least check it, but if the parts bill is 30-40% of a good modern IPS display (not within the 97%+ sRGB or DCI-P3 range, for fairness), it's not worth the trouble. My stance on this could change with time, but monitors tend to be borderline disposable today with how cheap good "consumer grade IPS" panels have gotten, with the high-end 97-99% sRGB and P3 ready panels being the new era of "high cost" panels, 16:10 panels are also making a comeback but you pay a lot more for them given how much they cost to make. At this point, TN is reserved for the dumpster quality tier displays. TN isn't quite dead, but it's walking on borrowed time.

On the ALXXXX/ALXXXXW displays, they're known to blow capacitors on the internal supply displays, and the fix is cheap, but you will need to DIY the repair for economic reasons and replace all of them other than the filter cap, including the inverter capacitor on some (like my early AL2216W had). However, yours uses an external power supply; find a good name-brand adapter that fits the jack, specifications, and polarity first, then re-evaluate. If the issue remains, follow these guides to open the monitor and inspect the power supply and video board: Acer AL1714 Power Supply Board - iFixit Repair Guide. For the driver board, check here: Acer AL1714 Video Display Board - iFixit Repair Guide. It looks like this monitor uses surface-mount caps, so the issue may be elsewhere; those do fail, but much less often.

It's rare for the driver board to have issues, though. 9 out of 10 times, the issue is due to the power supply alone.