|Needs equipment=Soldering Iron, Hot Air Station, Microscope
|Needs equipment=Multimeter
|Type=Soldering
|Type=Soldering
|Difficulty=3. Hard
|Difficulty=4. Specialist
}}
}}
{{stub}}
== Problem description ==
== Problem description ==
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This guide will go over diagnosing the a PS5 Pro with no signs of life
Some iPads using the CD3217 USB-C controller IC can develop a no charge, no boot, or low voltage negotiation issue. This typically happens after liquid damage or a power surge. Replacing the CD3217 alone doesn’t fix the issue, because the connected ROM IC is often corrupted or damaged.<blockquote>⚠️ Important: The CD3217 and ROM chip are not paired, but the ROM stores crucial firmware/data required for CD3217 functionality. If the CD3217 fails, it often damages the ROM, and a new CD3217 will not function unless the ROM is replaced or programmed.<br /></blockquote>
[[File:Ps5 pro standby voltages.jpg|thumb|Standby Voltages]]
[[File:IPad-Not-Charging.png|thumb|Symptom 1 (Fig. 1) -- iPad Not charging and stuck at 5.00V and 0.744A]]
== Symptoms ==
== Symptoms ==
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Detail all measurable or observable symptoms in this section.
Detail all measurable or observable symptoms in this section.
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* The device doesnt no turn on
* Symptom 1 (Figure 1)
** USB-C power meter shows only 5V — no voltage negotiation (should be 15)
* Symptom 2
** New CD3217 IC installed but still no charge
== Solution ==
== Solution ==
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* Replace both CD3217 and ROM IC (See Fig 2)
A Playstation 5 Pro that does not turn on can have many causes from a bad power supply to a motherboard problem.
* Program a new ROM using JC V1S Pro
* Install both chips
* Charging will be restored
=== Diagnostic Steps ===
=== Diagnostic Steps ===
* The first thing to check is if the power supply is producing 12V, if 12V are not present this can be due to a faulty power supply or a short on the motherboard stopping the power supply from creating the 12V line.
# [[File:CD32&ROMIC.png|thumb|Fig. 2 -- The CD3217 IC and the Ace ROM IC]]Visual Inspection
#* Look for signs of corrosion/Look for shorts around the CD3217 and ROM area
[[File:12V and 5V PS5 Pro.png|center|thumb|12V and 5V PS5 Pro]]
#* Check for burnt ROM chips or CD3217
# Voltage Testing
* If 12V are present the next thing to check is if the 5V is present to do this check the voltage on the coil on the image bellow.
#* Use USB-C power meter or bench power supply
#* Plug in USB-C and check if iPad negotiates proper voltage
#* 5V = error (bad CD3217/ROM or negotiation issue)<br />
=== Repair Steps ===
=== Step 1: Remove Damaged CD3217 & ROM ===
[[File:12V and 5V PS5 Pro.png|center|thumb|12V and 5V PS5 Pro]]
* Desolder both the faulty CD3217 and the adjacent ROM IC
* Clean area properly, ensure all pads are intact and usable
* If 5V is present the next thing to do is if the Southbridge IC is receiving the voltages need to work follow the image below and check if all these voltages are present.
* Get a blank ACE SPI Flash chip — compatible size for your board
* If these voltages are all present the next thing to do is to make sure all the fuses on the motherboard are ok to do this look at the PCB there will be marking that start with FXXXX these are fuses with your multimeter in continuity mode check if there is continuity across.
=== Step 3: Program the ROM Chip ===
[[File:Align-rom-jc.png|thumb|Fig. 3 -- Match the dot on the ROM chip to the triangle on the JCV1S Pro ROM Read/Write Module.]]
Option A: JC V1S Pro Server
* If all fuses are ok the next thing to check is for shorts on the motherboard especially on the capacitor on the backside of the Shoutbridge IC.
* Use JC V1S Pro with their ROM Read/Write Module
* Install and align the ROM chip to the triangle on the programmer. (See Fig. 3)
** Step 1] Press check on the programmer and it will detect the SPI chip.
** Step 2] Select 'Open' then 'ServerFile' (Note: Your V1S Pro needs to be connected to WiFi for this to work)
** Step 3] Choose corresponding file required for the model of your iPad.
** Step 4] Click Write and Confirm write
* If everything is the next thing thats left to do is to change the Southbridge IC sometimes they fail and wont be shorted.
Option B: Donor Board ROM Dump
== Repair Steps ==
* Pull a working ROM chip from a donor board of the same model
If 12V are not present remove the PSU in diode mode measure the Positive side of the PSU terminal on the motherboard it should have a high reading between 0.400 and 0.500, if ok replace the PSU.
* Use JC V1S Pro to read and save the dump locally
* Click write and select the file and flash the dump onto your blank ROM IC
* Store dumps in a labeled folder (example: iPad Pro 11 2nd Gen CD3217 ROM.bin)
[[File:IPad Succesfully Charging.png|thumb|Fig.4 -- iPad Successfully charging after CD3217 and Ace ROM replacement]]
If you get a reading of 0.000 it means there is a short on the 12V check the [[Short Circuits - Repair Basics|Short Circuits]] page on a guide on how find the short.
=== Step 4: Reball & Install CD3217 ===
If 5V is not present on the Motherboard this is probably due to a short on this line once again with your multimeter in diode mode measure the line and check if the value is high, it is common to have a short on the caps right next to the coil where you measured the 5V line.
* Reball and solder new CD3217 in place
* Ensure all surrounding passives are intact
If 1.15V and 3.3V on the image are missing it means that the PMIC is not working check if the 5V input is present if it is replace the PMIC, if 5V input is not present there is probably a short on this line if there is a short on the line F7002 will open.
=== Step 5: Install Programmed ROM ===
The Southbridge IC is the same used on the PS5 Slim CXD90069GG so you can get one from a donor board or buy online from a reputable seller.
* Solder the newly programmed ROM chip in original location
* Clean with IPA and inspect joints under microscope
* Verify Charging by plugging in a charger that supports 15V charging (See Fig. 4)
Revision as of 22:36, 30 July 2025
How To Program ROM Chip for iPads with CD3217
Device
Affects part(s)
Logic Board
Needs equipment
Soldering Iron, Hot Air Station, Microscope
Difficulty
◉◉◉◉ Specialist
Type
Soldering
This article is a stub. You can help Repair Wiki grow by expanding it
Problem description
Some iPads using the CD3217 USB-C controller IC can develop a no charge, no boot, or low voltage negotiation issue. This typically happens after liquid damage or a power surge. Replacing the CD3217 alone doesn’t fix the issue, because the connected ROM IC is often corrupted or damaged.
⚠️ Important: The CD3217 and ROM chip are not paired, but the ROM stores crucial firmware/data required for CD3217 functionality. If the CD3217 fails, it often damages the ROM, and a new CD3217 will not function unless the ROM is replaced or programmed.
Symptom 1 (Fig. 1) -- iPad Not charging and stuck at 5.00V and 0.744A
Symptoms
Symptom 1 (Figure 1)
USB-C power meter shows only 5V — no voltage negotiation (should be 15)
Symptom 2
New CD3217 IC installed but still no charge
Solution
Replace both CD3217 and ROM IC (See Fig 2)
Program a new ROM using JC V1S Pro
Install both chips
Charging will be restored
Diagnostic Steps
Fig. 2 -- The CD3217 IC and the Ace ROM ICVisual Inspection
Look for signs of corrosion/Look for shorts around the CD3217 and ROM area
Check for burnt ROM chips or CD3217
Voltage Testing
Use USB-C power meter or bench power supply
Plug in USB-C and check if iPad negotiates proper voltage
5V = error (bad CD3217/ROM or negotiation issue)
Repair Steps
Step 1: Remove Damaged CD3217 & ROM
Desolder both the faulty CD3217 and the adjacent ROM IC
Clean area properly, ensure all pads are intact and usable
Step 2: Prepare New CD3217 + New ROM IC
Use a fresh CD3217 IC from a trusted supplier
Get a blank ACE SPI Flash chip — compatible size for your board
Step 3: Program the ROM Chip
Fig. 3 -- Match the dot on the ROM chip to the triangle on the JCV1S Pro ROM Read/Write Module.
Option A: JC V1S Pro Server
Use JC V1S Pro with their ROM Read/Write Module
Install and align the ROM chip to the triangle on the programmer. (See Fig. 3)
Step 1] Press check on the programmer and it will detect the SPI chip.
Step 2] Select 'Open' then 'ServerFile' (Note: Your V1S Pro needs to be connected to WiFi for this to work)
Step 3] Choose corresponding file required for the model of your iPad.
Step 4] Click Write and Confirm write
Option B: Donor Board ROM Dump
Pull a working ROM chip from a donor board of the same model
Use JC V1S Pro to read and save the dump locally
Click write and select the file and flash the dump onto your blank ROM IC
Store dumps in a labeled folder (example: iPad Pro 11 2nd Gen CD3217 ROM.bin)
Fig.4 -- iPad Successfully charging after CD3217 and Ace ROM replacement
Step 4: Reball & Install CD3217
Reball and solder new CD3217 in place
Ensure all surrounding passives are intact
Step 5: Install Programmed ROM
Solder the newly programmed ROM chip in original location
Clean with IPA and inspect joints under microscope
Verify Charging by plugging in a charger that supports 15V charging (See Fig. 4)
