In the DeWalt DWST1-81078 radio, the part of the power supply that identifies the battery is damaged (the radio works on the power supply - it does not charge the battery and does not want to operate from the battery). I am looking for a person who will undertake repairs, preferably in Warsaw...

Hello experts, in my radio, the W1A 05 transistor blew in the power module, if I replace it with a new one, will it work properly or was the cause of the firing something else? Please help.

Hello, I am asking for help in determining the parameter of the transistor that fired W 1A 05. I cannot find the diagram of this 94V-0 IQE-M1E365781 2320 board anywhere. This is the power and charging system in the DeWalt DWST1-81078 construction site radio. The previous speaker has the same arrangement after flooding.

I also have a problem with such a tile after pouring. And I'm looking for a specialist to handle it.

Hello gentlemen. I have a follow-up question. How to open this radio. I unscrewed all the screws, but the halves do not want to come apart... Something is holding tightly.

Two screws are hidden under the latches that connect this radio to another box. They are quite deep under this foam.

Thank you! They were hidden there and another one under the stickers on the back. Well, the rest is under the speakers cover.

Hello. i have an identical module after flooding i need identification of the components R17 and Q46 located at the power socket. Thank you in advance for your help.

List of components in the power supply module – might be useful to someone Q46 X7ZL OR X7NX AO3407 Q47 X7GLQ49 W1AD2 and D3: D34 or BF Zener 7.5V sod-123D35, D38, D39 – marked as D34D40 IZ R61 1k 0402R60 1k 0402R15 10 Ohm 0402R19 4.7k Ohm R143 17.2 kOhm 0402R221 R224 224 k 0402R223 and R220 27 kOhm 0402 R217 100kOhm 0402R218 100kOhm 0402R200 155kOhm 0402R226 R100 C192 C3 C4 11uF 1206U11 FC 127 SOT23-5U26 4202 6-pin SOT23 TPS54202

Dewalt DWST1-81078 - charging the battery after flooding - I am looking for a service

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Corrosion damaged battery identification circuit after flooding
#1 19784461 27 Dec 2021 14:23

duchnowd duchnowd

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Corrosion damaged battery identification circuit after flooding
Post #1 19784461 27 Dec 2021 14:23

In the DeWalt DWST1-81078 radio, the part of the power supply that identifies the battery is damaged (the radio works on the power supply - it does not charge the battery and does not want to operate from the battery). I am looking for a person who will undertake repairs, preferably in Warsaw and the surrounding area.

From what you can see, there is corrosion after flooding.
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#2 19955916 30 Mar 2022 20:29

AleksanderP1 AleksanderP1

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» | Positive voted Helpful post? (+10)

Post #2
19955916 30 Mar 2022 20:29

Hello experts, in my radio, the W1A 05 transistor blew in the power module, if I replace it with a new one, will it work properly or was the cause of the firing something else? Please help.
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Identifying a burned W1A05 transistor on charging board
#3 19957610 31 Mar 2022 21:04

AleksanderP1 AleksanderP1

Level 6

Posts: 33

Rate: 18
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Identifying a burned W1A05 transistor on charging board
Post #3 19957610 31 Mar 2022 21:04

Hello, I am asking for help in determining the parameter of the transistor that fired W 1A 05. I cannot find the diagram of this 94V-0 IQE-M1E365781 2320 board anywhere. This is the power and charging system in the DeWalt DWST1-81078 construction site radio. The previous speaker has the same arrangement after flooding.
#4 19990066 22 Apr 2022 19:05

kudlatov kudlatov

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Posts: 15

Rate: 25
» | Positive voted Helpful post? (+10)

Post #4
19990066 22 Apr 2022 19:05

I also have a problem with such a tile after pouring. And I'm looking for a specialist to handle it.
#5 20018335 13 May 2022 22:36

Pokey Pokey

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Post #5
20018335 13 May 2022 22:36

Hello gentlemen. I have a follow-up question. How to open this radio. I unscrewed all the screws, but the halves do not want to come apart... Something is holding tightly.
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#6 20020522 15 May 2022 21:37

kudlatov kudlatov

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Rate: 25
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Post #6
20020522 15 May 2022 21:37

Two screws are hidden under the latches that connect this radio to another box. They are quite deep under this foam.
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#7 20023949 18 May 2022 11:30

Pokey Pokey

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Post #7
20023949 18 May 2022 11:30

Thank you!
They were hidden there and another one under the stickers on the back. Well, the rest is under the speakers cover.
#8 21608544 16 Jul 2025 15:59

picia22 picia22

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Post #8
21608544 16 Jul 2025 15:59

Hello. i have an identical module after flooding i need identification of the components R17 and Q46 located at the power socket. Thank you in advance for your help.
Power supply module component list and markings
#9 21932004 03 Jul 2026 10:10

Olo80 Olo80

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Power supply module component list and markings
Post #9 21932004 03 Jul 2026 10:10

List of components in the power supply module – might be useful to someone

Q46 X7ZL OR X7NX AO3407
Q47 X7GL
Q49 W1A
D2 and D3: D34 or BF Zener 7.5V sod-123

D35, D38, D39 – marked as D34
D40 IZ

R61 1k 0402
R60 1k 0402
R15 10 Ohm 0402
R19 4.7k Ohm
R143 17.2 kOhm 0402
R221 R224 224 k 0402
R223 and R220 27 kOhm 0402
R217 100kOhm 0402
R218 100kOhm 0402
R200 155kOhm 0402
R226 R100

C192 C3 C4 11uF 1206

U11 FC 127 SOT23-5
U26 4202 6-pin SOT23 TPS54202
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Topic summary

Discussion about repairing a flooded DeWalt DWST1-81078 construction radio/power module that no longer charges the battery or runs from battery power. The fault is traced to corrosion and damage in the battery-identification/charging section of the power supply board, including a blown W1A 05 transistor and requests for component identification such as R17 and Q46. The thread also covers how to open the radio enclosure and later provides a component list for the power supply module, including MOSFETs, zener diodes, resistors, capacitors, and regulator ICs useful for repair.
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Dewalt DWST1-81078 - charging the battery after flooding - I am looking for a service

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