Introduction

Most Garmin Forerunner 245 Music problems fall into three groups: charging that's become unreliable or has stopped working altogether, a screen that's gone blank or cracked, and a battery that no longer holds a charge the way it used to. Unlike the screw-based Forerunner 10, this watch is sealed with adhesive for waterproofing — and Garmin's own teardown documentation notes it uses a more complicated glue construction than older models, so opening it takes more patience than a simple screwdriver job. This guide covers diagnosis, the real disassembly approach documented by people who've actually done it, and how to tell a cheap fix (cleaning the charging pins) from one that genuinely needs a replacement part.

What Is the Garmin Forerunner 245 Music

The Forerunner 245 Music is a mid-range GPS running watch built around a transflective color display with no touchscreen — navigation is entirely through five physical buttons — plus onboard music storage for offline playback. It uses 20mm quick-release bands, and the case itself is sealed shut with adhesive rather than screws to maintain water resistance. According to iFixit's own teardown notes, this watch "makes use of a complicated glue construction," which is a step up in difficulty from the simpler glue jobs on earlier Forerunner models, so disassembly here takes more care than most other Garmin watches. (iFixit Teardown)

Structurally, almost every repairable fault on this watch comes down to one of three things: the display assembly, the charging contacts on the back of the case, and the internal battery. All three are reachable once the adhesive seal around the display is worked loose — there's no official step-by-step repair manual from iFixit for this model, only a teardown and scattered community documentation, so the disassembly notes below are compiled from people who've actually opened one, not a numbered factory guide.

Common Garmin Forerunner 245 Music Problems and Why They Happen

Blank or Black Screen, Even After a Hard Reset

A documented case describes a Forerunner 245 Music with a completely blank screen that persisted even after a hard reset — the watch beeped normally during the reset, confirming it was powered on, but nothing appeared on the display. When the screen stays blank despite audible confirmation that the watch is running, the fault is in the display itself or its connection, not the battery. (JustAnswer)

Intermittent or Failing Charging

This is, by a wide margin, the most heavily documented Forerunner 245 issue. One detailed forum account described a charging problem that started after about a year of use and then became a recurring chore — cleaning the contacts would restore charging temporarily, but the need to clean them kept coming back more and more often. Garmin's own support site has a dedicated official page specifically for cleaning corrosion off the charging contacts, which is a strong signal of how common this fault is across the model line. (Garmin Forums)

Charging Works, Then Stops, Then Works Again

A separate but related pattern is charging that comes and goes over a period of weeks rather than failing completely — the watch charges normally for a while, then stops, then starts again without any clear trigger. This intermittent behavior points toward a marginal contact or cable connection rather than a fully dead charging circuit. (JustAnswer)

Battery Draining Faster Than It Used To

A separate real case describes a Forerunner 245 Music that charges normally but then loses its charge unusually quickly — in that instance, a retailer suggested the battery may have degraded from being charged the way a phone typically is, though the underlying cause of accelerated battery wear can vary. Either way, a battery that charges fine but drains fast points to the cell itself rather than the charging contacts. (JustAnswer)

Cracked Screen

Impact damage cracking the display lens is a reported fault, and at least one documented case describes successfully separating a cracked screen at home using a hairdryer to soften the adhesive and a thin blade to work the seam apart — notably starting from the two-button side of the case specifically because there's a cable running underneath the opposite side that's easy to damage if you start prying there instead. (iFixit Teardown comments)

Music Widget Freezing Mid-Activity

Separately from any hardware fault, a documented and fairly widely reported software bug causes the music widget to stop playing songs entirely — changing the playlist doesn't help, and the only fix is restarting the watch, which also ends whatever activity was being tracked. This is worth ruling out before assuming a hardware problem, since it has nothing to do with the display, battery, or charging contacts. (Garmin Forums)

How to Diagnose the Problem Before You Open the Case

1. Confirm the watch is actually powering on. If a hard reset produces audible beeps but the screen stays blank, that's a display fault, not a dead battery.
2. Shine a light across the screen at an angle in a dark room. If you can faintly make out menus or shapes, the backlight has failed but the display panel itself is still working — a different (and often cheaper) fix than a fully dead screen.
3. Clean the four charging pins with isopropyl alcohol and a soft brush. This is the single most reported fix for charging failures on this model, and Garmin has an official support page dedicated to it.
4. Check the charging cable itself, not just the watch. A cable that no longer clicks firmly into place, or whose rubber near the connector has started to crack, is a well-documented wear point separate from the watch's own contacts.
5. If charging is intermittent over a period of weeks rather than fully dead, suspect a marginal contact or cable connection before assuming the battery has failed.
6. Rule out a software freeze first if the issue is limited to the music widget. A restart resolving it points to firmware, not hardware.
7. If the watch charges normally but drains unusually fast afterward, that points to the battery cell itself rather than the charging contacts.

Quick diagnostic table:

Symptom	Most Likely Cause	Part / Fix Needed
Blank screen, hard reset produces beeps but no display	Display assembly or its connection	Replacement display assembly
Faint shapes visible only when light is shined at an angle	Failed backlight, panel still functional	Backlight/display assembly inspection
Won't charge, contacts look dull or discolored	Corrosion/oxidation on charging pins	Clean contacts with isopropyl alcohol
Charging requires cleaning more and more often over time	Ongoing corrosion buildup	Clean regularly; replace charging contacts if it keeps worsening
Charges intermittently over several weeks	Marginal contact or worn charging cable	Try a different cable first, then inspect watch-side contacts
Charges fine but drains unusually fast	Degraded battery cell	Replacement battery
Cracked screen, watch otherwise powers on normally	Impact damage to display lens	Replacement display assembly
Music widget freezes, rest of watch works fine	Firmware bug	Restart; check for a software update

How to Disassemble the Garmin Forerunner 245 Music 

There's no official numbered iFixit repair guide for this exact model — only a teardown plus real notes from people who've opened one, which is what this sequence is built from. Treat this as a documented community approach rather than a factory-sanctioned procedure. (iFixit Teardown)

Tools needed: hairdryer or heat gun (controlled heat), a thin, strong blade (a Stanley/utility knife has worked for others, used carefully), plastic spudger, tweezers, and — if you're going as far as a battery swap — a soldering iron.

Step 1: Remove the Bands

Slide the pin on the metal bar at each spring bar and pull the 20mm quick-release bands away from the watch body.

Step 2: Heat the Display Edge

Apply gentle, even heat around the perimeter of the display with a hairdryer to begin softening the adhesive. This watch's glue construction is described as more complex than older Forerunner models, so expect to need more patience and repeated heating than a simpler glued watch.

Step 3: Start Prying From the Button Side

This is the one detail worth paying close attention to: start separating the display specifically from the two-button side of the case, not just anywhere around the seam. There's a cable running underneath the opposite side, and starting there risks slicing or tearing it. Work the thin blade in slowly, reheating as needed rather than forcing the seam apart.

Step 4: Separate the Display Fully

Continue working around the perimeter with the heat-and-pry approach until the display lifts free, watching for the internal cable the whole way and keeping the blade angled away from it.

Step 5: Access the Battery (If Replacing It)

With the display off, the battery is reachable but connected by soldered wires rather than a plug-in connector on this model — a soldering iron is genuinely necessary here, not optional, unlike some other Garmin watches where the battery simply unplugs.

How to Repair and Reassemble the Garmin Forerunner 245 Music

Replacing a Cracked or Failed Display

Once the old display is separated, connect and seat the replacement, then power the watch on before resealing to confirm the screen is fully functional with no dead sections or backlight issues. Reseal the perimeter with a proper waterproof electronics adhesive — this watch's water resistance depends entirely on getting this seal right, more so than on the screw-based Garmin models.

Replacing the Battery

Desolder the old battery's leads, noting polarity before you do, and solder the new battery's wires to the same points. Test the watch powers on and holds a charge before resealing the display back into place.

Fixing Charging Problems Without Opening the Watch

Start here before considering any disassembly: clean the four charging pins on the back of the case with isopropyl alcohol and a soft brush or old toothbrush. If the connection still feels loose or the cable itself looks worn near the connector, try a different charging cable before assuming the watch's contacts are at fault — cable wear is a well-documented, separate failure point from the watch itself. If cleaning has to be repeated more and more frequently despite a good cable, the contacts themselves have likely corroded enough to need attention beyond simple cleaning.

Resealing and Testing

Whatever you've repaired, the same rule applies: power the watch on and confirm every function — display, buttons, charging — works correctly before applying the final adhesive seal, since reopening a freshly resealed watch to fix something you missed is far more work than testing first.

Replacement Parts Guide

• Replacement display assembly for Garmin Forerunner 245 Music — for a blank, cracked, or backlight-failed screen.
• Battery — for a watch that charges normally but drains unusually fast, or won't hold charge at all.
• Charging contact module — for charging faults that persist even after thorough cleaning and a known-good cable.
• Back cover with charging port — if the housing around the charging contacts itself is damaged or corroded beyond cleaning.

Every display we supply is functionally tested before shipping — checked for dead sections, backlight uniformity, and correct connector fit against this model's exact pinout. Batteries are tested for charge-holding capacity. Parts are 90–100% new condition, with a 3-month warranty on every order.

OEM vs Aftermarket Parts: Buying Guide

Factor	OEM / Original Garmin Parts	Aftermarket / Compatible Parts
Availability	Garmin does not sell this exact battery separately	Available through repair-parts suppliers
Fit accuracy	N/A for battery; official service for display	Accurate on the 245 Music when correctly specified
Cost	Official mail-in repair service, if available, typically costs more than a DIY part	Lower cost, especially for a battery swap
Warranty	Varies by service channel	Look for at least 90 days from the parts supplier

What to check before buying:

1. Confirm the part is listed for the Forerunner 245 Music, not the non-Music 245 — the two share a similar shell but the internal board differs.
2. Ask whether the display has been pre-tested for backlight uniformity and dead sections, not just power-on function.
3. For a battery, confirm it matches this watch's specific cell (commonly referenced under part number 361-00086-11) rather than a generic similarly-sized cell.
4. Prefer a supplier offering at least a 90-day (3-month) warranty on tested electronic components.

Common Mistakes to Avoid

• Prying anywhere except the button side first — the hidden cable under the opposite side of the case is a real, documented risk, and starting there is how people damage a watch that was otherwise fixable.
• Rushing the heat step — this model's glue construction is more complex than older Forerunners; forcing the seam before the adhesive is properly softened is a common cause of a cracked case or bent display.
• Assuming a charging problem is a dead battery — clean the contacts and try a different cable first; this resolves a large share of reported cases without opening the watch at all.
• Ignoring a worn charging cable — the cable's connector wears out with repeated use independently of the watch, and replacing a cheap cable is a lot easier than diagnosing the watch itself.
• Skipping the pre-seal power test — always confirm the display, buttons, and charging all work before resealing the adhesive around the display.
• Attempting a battery swap without a soldering iron on hand — this model's battery is soldered in, not plugged in; assuming otherwise mid-repair leaves you with an open watch and no way to finish safely.
• Mistaking a firmware freeze (like the music widget bug) for a hardware fault — try a restart and check for a software update before disassembling anything.

FAQ

Question: Why is my Garmin Forerunner 245 Music screen completely blank even after a hard reset? Answer: In a documented case, a hard reset produced normal beeps confirming the watch was powered on, but the screen stayed blank throughout — this points to the display assembly or its connection rather than the battery, since the watch was clearly still running underneath. (JustAnswer)

Question: How can I tell if it's the backlight or the whole display that's failed? Answer: In a dark room, shine a bright light across the screen at an angle — if you can faintly make out menus or shapes, the display panel is still functioning and only the backlight has failed, which is a different and often less involved fix than a fully dead screen. (JustAnswer)

Question: Why does my Forerunner 245 Music need its charging contacts cleaned more and more often over time? Answer: This matches a widely reported pattern where cleaning the contacts restores charging temporarily, but the underlying corrosion keeps returning and needing attention more frequently the longer the watch is used — Garmin's own support site has a dedicated official page specifically for cleaning this corrosion, reflecting how common the issue is. (Garmin Forums)

Question: My Forerunner 245 charges for a while, then stops, then starts working again — what does that mean? Answer: This intermittent, weeks-long on-and-off charging pattern has been documented as a real case, and it points to a marginal contact or cable connection rather than a battery that's completely failed — worth testing with a different charging cable before assuming the watch itself needs repair. (JustAnswer)

Question: Can I fix a cracked Forerunner 245 Music screen myself? Answer: Yes — one documented case describes successfully removing a cracked screen using a hairdryer to soften the adhesive and a thin, strong blade to separate it, specifically starting from the two-button side of the case because a cable runs underneath the opposite side and is easy to damage if you start there instead. (iFixit Teardown comments)

Question: Can I replace the battery in a Forerunner 245 Music myself? Answer: It's documented as feasible for someone with a soldering iron, since this model's battery is soldered to the board rather than connected with a plug — Garmin doesn't sell this exact battery separately, but compatible replacements are available through repair-parts suppliers using the reference part number 361-00086-11. (iFixit Answers, iFixit Teardown comments)

Question: Why does my Forerunner 245 Music charging cable feel loose or wobbly even though the watch pins look clean? Answer: The charging cable's own connector wears out with repeated use — as it ages, the firm click you'd feel with a new cable fades into a loose, unreliable connection, which is a documented failure point separate from the watch's charging contacts themselves. (Running with Rock)

Question: Is it normal for the music widget to freeze and stop playing songs? Answer: Yes, this is a documented and fairly widely reported firmware bug where the music widget stops responding mid-activity and only a restart resolves it — since it's a software issue rather than a hardware fault, it's worth ruling out before assuming anything is physically wrong with the watch. (Garmin Forums)

Question: Why does my watch drain its battery fast even though it charges normally? Answer: A charge cycle that completes normally but is then followed by unusually fast drain points to the battery cell's condition rather than the charging contacts or cable — in one documented case, a retailer attributed this to how the watch had been charged over time, though the exact cause of accelerated wear can vary by unit. (JustAnswer)

Question: Is there an official repair guide for the Forerunner 245 Music? Answer: Not a full step-by-step one — iFixit has published a teardown of this model, which documents its construction and component layout, but not a numbered repair guide the way it has for some other Garmin devices, so real repairs rely on the teardown notes and community documentation rather than an official procedure. (iFixit Teardown)